Home » Even individual VTubers can achieve this much! A report on Kobato Takanashi’s 1st solo live concert “Rainbow Endless Dream,” utilizing Portalgraph’s AR technology.

VTuber in Japan 2026.04.01

Even individual VTubers can achieve this much! A report on Kobato Takanashi’s 1st solo live concert “Rainbow Endless Dream,” utilizing Portalgraph’s AR technology.

On March 28, 2026, VTuber Takanashi Kobato held her first solo live concert, “Nijiiro Endless dream,” at a live music venue in Shibuya, Tokyo.

The most distinctive feature of this performance was that it was an AR live show utilizing technology from Portalgraph Inc. Through 3D glasses, her figure appeared as if she were actually present on stage, offering the audience a visual experience that blurred the boundaries between what was inside and outside the screen.

This was a momentous occasion where she transcended the boundaries of an individual VTuber and created her ideal stage with her own hands. This report details her challenge and the excitement surrounding it.

Experience a sense of depth with 3D glasses! This is more than just a first solo concert; it’s a grand stage for this independent VTuber.

Stepping into the live music venue, I was greeted by a unique scene unlike any other VTuber concert I’d seen before. Many of the seated audience members were wearing 3D glasses, gazing at the stage with anticipation.

When the live performance began, Takanashi Kobato appeared on stage. Her singing and dancing, projected as a 3D model on a large screen, at first glance seemed not much different from a “VTuber music live” held in a live music venue of similar size.

However, the moment I turned my gaze through the 3D glasses, her figure on stage appeared in three dimensions.

While it doesn’t offer the same sense of depth as viewing a 3D avatar through a VR headset, it certainly looks like they are “standing on a stage.” Instead of moving around on a flat screen, there was a VTuber performing with their feet firmly planted on the ground.

It’s not just Kobato herself that appears three-dimensional. Many of the effects and background visuals that enhance the performance also float in space thanks to the 3D glasses. The curtain rose on a stage with a unique sense of realism that is different from both conventional music concerts and VR concerts.

They performed all 15 songs one after another! The main part of the live show was a huge success, with the fans in the audience joining in and creating an exciting atmosphere.

Takanashi Kobato is a maid VTuber who works independently. She launched a crowdfunding campaign in 2021 to start her VTuber activities, raising over 1 million yen and making her debut the following year. With the goal of holding a solo concert at Zepp, she has been steadily but surely making progress towards that goal.

Her recent rise has been particularly remarkable. Her 3D debut live stream in February 2025 not only trended on social media but also achieved the astonishing feat of ranking first in Japan and second worldwide in the Super Chat rankings. In the same year, she surpassed 50,000 channel subscribers, had a successful pop-up store, and even held a 3D birthday live concert with a production budget of 5 million yen, continuing her rapid progress.

The song that kicked off her memorable first solo live performance was “Hatsukoi Cider” (First Love Cider).

Following up with the second song, “Dokidoki Kyun! de Daibousou♡,” they delivered a full-throttle performance, just as they had declared in the previous day’s live stream that they would “practice beyond their limits,” instantly raising the energy of the venue.

After finishing two songs, Kobato addressed the audience.

“I’m a lucky charm for bringing good weather, so I worked hard to make it sunny today!” she exclaimed, but it was difficult to hear due to sound problems. Every time the audio was distorted, she would ask “What?!” in a casual exchange with her fans, “Kobarisu” (her nickname), which showed her unique, close-knit, and homey personality.

“I’m Kobato Takanashi, a maid VTuber chasing my dreams!” she introduced herself again, and then pointed to the audience lined up wearing 3D glasses, saying, “Can you see this bizarre sight!” She explained that this performance was an AR live show in cooperation with Portalgraph Inc., and comically highlighted her own movements, which appeared three-dimensional, drawing laughter from the audience.



During the third song, “Hana wa odoreya irohaniho,” a fan appeared in her hand. As she danced gracefully amidst the fluttering petals, the audience’s cheers grew even more enthusiastic.

Furthermore, during “Suirenka,” he appeared wearing sunglasses. Loud shouts of “! Me! Me! Me!” erupted from the audience, and fireworks fountained on stage. He swung a towel around and jumped around the stage, delivering a hot performance that seemed to anticipate the coming season.

In the fifth song, “Hajimari ha kimi no sora,” a surprise was waiting in the latter half of the song.

Kobato was enveloped in light and transformed into the key visual costume for this live performance, “Brave Rainbow Frill”! The audience erupted in particularly loud cheers at the sight of the new costume, which was being unveiled for the first time.

Kobato: “Did you think I’d stay in my maid outfit the whole time?”
Audience: “Yeah!!”
Kobato: “…Did you just say ‘yes’?! Just now!”
Audience: “(laughs)”

Kobato: “I bet there are people who secretly thought, ‘Maybe we’ll get new costumes?'”
Audience: “Yess
Kobato: “…I don’t dislike kids with good intuition.”


After some comical exchanges during the MC segment, they performed two songs back-to-back: “Ashitano watashi ni sachiare” and “Seiza ni naretara.”

After a stage filled with pop and fun performances, she shifted gears with emotional rock numbers, and many fans listened quietly to her voice resonating against the backdrop of a starry sky. These were apparently songs that had been frequently requested during the live stream, and when she said, “I’ve been cherishing these songs until today,” fans responded with shouts of gratitude such as, “Thank you!” and “I can work hard from tomorrow now!”


The second half of the concert featured a ballad section. She performed “seeds” while seated, and then introduced “Love Call” as a song that holds special meaning for her.

She identified with the radiant voice actress she admired, and said, “I wanted to sing this song on stage at a moment when I could shine,” as her pure white outfit blended into the warm applause.


The live performance is now entering its second half. Her second original song, “Bokura no Future song!!”, is performed.

Responding to the cheers and applause that erupted from the audience, she took to the stage and swept through the venue with her vibrant singing voice. To her call of “Let me hear it! Your sound!”, the audience responded with their wholehearted enthusiasm. The singing, cheers, and continuous applause exchanged throughout the song pushed the sense of unity in the venue to even greater heights.

Maintaining that energy, they moved on to the next song, “Fukutsu no Idol.”

She sings this song, which depicts the pride of an idol who continues to stand on stage without ever giving up, even when faced with hurtful words and countless difficulties, with great power and emotion. Her strong voice carries a definite weight that affirms her journey so far.

Next, without a moment’s pause, they performed “Kono sekai no tanoshimikata.”

The performance begins with her own original song, which has a strong element of being an anthem of encouragement, followed by two HoneyWorks covers that resonate with idols on stage and everyone striving towards their dreams. The passionate selection of songs, which seems to inspire each and every fan in front of her, and “someone” somewhere in the world who is persevering, is truly heartwarming.


“Alright then… this is the last one! Let’s get this party started!”

With a roaring, explosive voice, she unleashed her signature song, her first original track, “Heroine ni naritai!”

This song, created together with fans through crowdfunding, is a signature track for VTuber Takanashi Kobato. There could be no more fitting song to conclude her first solo live performance. Responding to the cry of “Reach out!” from the stage, the venue reached its peak of excitement. The audience’s heartfelt calls echoed throughout the venue, bringing the main part of the show to a spectacular close.


The moment she finished singing the last song, calls for an encore erupted within seconds. The speed of the transition was so remarkable that she later chuckled during her MC, saying, “That was a ridiculously quick encore, wasn’t it?!”

As if drawn by that enthusiasm, she reappeared on stage and performed “Koba Rap,” a song that has become popular as a waiting track for her live streams.

This was the long-awaited first performance of the full version, but what was truly amazing was the fans’ adaptability. The highly skilled “Kobarisu” fans immediately responded with calls to phrases they were hearing for the first time, filling the venue with a sense of unity that made it hard to believe it was the first performance.

During the MC segment after her performance, a major announcement was made: the release of Koba Takanashi’s 1st single, “Sasagete♡Mugendai LOVE” (Dedicate♡Infinite Love). The song is produced by IOSYS, who have worked on numerous VTuber songs. The full version of “Rap Koba” will also be included on the CD. This good news was met with thunderous applause from the audience.

Before singing her final song, Kobato tried to express her gratitude to her beloved fans. There was a moment when her voice choked up, as she said, “I was perfectly fine and didn’t cry until just now,” but supported by the warm cheers from the audience, she put into words her heartfelt gratitude to her “Koba-risu” (fans).

“Thanks to all of you, we were able to hold such a wonderful live show! Thank you so much! It was so much more fun than when I sang back then, when I was nobody and nobody seemed interested in me, and I got to see the best view! All of my fans gathered just for me, sang with all their might, and waved their hands. It’s truly amazing to have this view all to myself! Next time, I’ll work hard so that I can sing on an even bigger stage in front of a larger audience, so please continue to support me!”


The grand finale of their first solo concert will be their newly released 1st single, “Sasagete♡Mugendai LOVE”.

This is a super high-energy, quirky song that’s pure IOSYS style, with Kobato repeatedly calling out to her “master” throughout the song. As Kobato brilliantly sang the brand new song for the first time, her “Koba-risu” fans immediately adapted to the call-and-response displayed on the screen. The 1st solo live concert came to a close in a venue where the excitement reached its peak.

The technology and ingenuity that support immersion—Individual VTubers demonstrate the new possibilities of “XR live performances”

A memorable first solo live performance, where a single VTuber stood on the stage of a live music venue.

Nowadays, real-life events featuring VTubers are no longer uncommon. Whether organized by companies or individuals, VTubers sing and dance on stages somewhere almost every week, meeting their fans.

However, “Nijiiro Endless dream” can be said to have been a particularly challenging endeavor among the many VTuber events. This is because Kobato Takanashi, who works independently, single-handedly realized an AR live performance on the grand stage of her first solo concert.

https://x.com/kobatonooyatsu/status/2037760398854930761

This unprecedented challenge was supported from a technical standpoint by the AR technology provided by Portalgraph Inc.

Portalgraph, a company advocating for the “democratization of VR experiences,” develops technologies such as “Portalgraph,” a VR space projection technology that does not require expensive headsets. In addition to “Geo Portal,” which allows users to freely manipulate and view 3D maps, they have recently launched “Hologram 1on1 Portal Meet,” which allows users to talk with life-sized, 3D-projected VTubers.

What’s particularly noteworthy about this project is that it uses relatively inexpensive and easy-to-implement 3D glasses, rather than expensive AR glasses like XREAL or glasses-free 3D displays. The simple yet effective technique involves making parts of the screen image appear three-dimensional when viewed through the glasses.


Compared to AR glasses that project images onto the device itself, it must be said that the 3D effect is rather understated (*). However, it cannot be said that there was absolutely no sense of presence. There was a unique immersive experience brought about by the “familiarity” with 3D glasses and the sense of unity in the venue.

At first, my perception was only that she “seemed to be floating,” but as I surrendered myself to the performance, I began to accept that visual information as something normal. That was the feeling I had. Gradually, the presence of the screen faded from my awareness, and the sense of her “standing there” slowly began to dominate the space.

(※The reason the sense of depth felt somewhat subdued may be due to the distance between the author and the stage. According to the live stream of the concert held the following day, there were concerns that the sense of depth would be diminished depending on the viewing location, so the audience seats were arranged as close to the center as possible.)

However, to achieve that immersive experience, it’s necessary to eliminate elements that detract from it. Noises such as the VTuber’s appearance becoming distorted, reminding the viewer that it’s just a “video,” the device being worn shifting, or bumping into other audience members bringing the viewer back to reality must be avoided.

In that respect, this concert had a structure that made it very easy to become “immersed” in the experience.

Not only were there no video problems, but the seated format allowed attendees to enjoy the live performance without worrying about close contact with those around them, creating an environment where they could concentrate on the stage. Yet, the call-and-response from the “Kobaris” fans, clad in happi coats and merchandise, was passionate, and a live concert atmosphere permeated the entire venue.

As for the 3D glasses, their appearance and weight are indistinguishable from regular glasses, and they don’t feel out of place when worn over everyday glasses. I myself wore them over my own glasses throughout the approximately 90-minute live performance, and I never felt any fatigue.

Recently, there has been an increase in cases where VTubers can be viewed from any angle using sophisticated AR technology. However, the method presented by Kobato this time felt like an extremely realistic and widely applicable option for “bringing VTubers onto a real-world stage” in a more convenient and effective way.

Until now, XR live performances have often been led by large corporations, but “Rainbow Endless Dream,” which was completed by an individual VTuber, was brought to life through her own efforts, albeit in collaboration with a company. Overcoming these high hurdles, it was a brilliant debut for VTuber Takanashi Kobato, and at the same time, it was a live performance that foreshadowed the arrival of a new era in which independent performers, armed with cutting-edge technology, forge their own future.

[Setlist]

  1. Hatsu koi Cider
  2. Doki Doki kyun! de Daibousou♡
  3. Hana wa odoreya irohaniho
  4. Suirenka
  5. Hajimari ha kimi no sora
  6. Ashita no watashi ni sachiare
  7. Seiza ni naretara
  8. seeds
  9. Love call
  10. Bokura no future song!!
  11. Fukutsu no Idol
  12. Kono sekai no tanoshimikata
  13. Heroine ni naritai!
  14. Koba Rap (Full ver)
  15. Sasagete♡ Mugendai LOVE

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This article is an English translation of an original Japanese article, translated by the Mogura VR editorial team.