New "Breath-Regulating" Habit for Popular VTuber's Esports Tournament: "REBOO" Sponsors Shishiro Botan's "Shishiro Cup - Offline -"
BREATHER Inc. announced that its new product "REBOO" will sponsor the "Shishiro Cup - Offline -" esports tournament, hosted by popular VTuber Shishiro Botan. REBOO supports instant refreshment through "inhaling deep breaths," contributing to the condition maintenance of esports players.
📋 Article Processing Timeline
- 📰 Published: April 10, 2026 at 18:00
- 🔍 Collected: April 10, 2026 at 09:01
- 🤖 AI Analyzed: April 20, 2026 at 07:48 (238h 46m after Collected)
BREATHER Inc. (Headquarters: Minato-ku, Tokyo; Representative Director: Shigenobu Tatsuoka; hereinafter BREATHER), which develops and sells deep breathing support devices "ston" and breathing smart cushions "fufuly," announces that its new product "REBOO," which supports instant refreshment through "inhaling deep breaths," will sponsor the "Shishiro Cup - Offline -" event, hosted by Hololive VTuber Shishiro Botan.
## Background of Sponsorship
BREATHER develops products that spread the unprecedented "value of breathing" to society through experiences that make "breathing deeper, more enjoyable, and innovative."
In the world of esports and streaming, prolonged high concentration and the need for instant switching during breaks are key to performance. The extreme concentration required in fighting games and the brief rest periods in between—how can these moments be transformed into high-quality refreshment?
"REBOO" supports the passion of players and spectators by regulating their condition through "inhaling deep breaths" and enhancing the quality of their transitions.
This tournament, "Shishiro Cup - Offline -," hosted by Hololive VTuber Shishiro Botan, who has over 1.56 million YouTube subscribers, is a popular event that includes professional gamers, streamers, and publicly recruited players. This tournament, which recorded a maximum of 200,000 concurrent viewers online, is now finally holding its first real-world event.
BREATHER will support the performance of athletes and spectators with the "power of deep breathing" at one of Japan's largest and most passionate stages in the VTuber x esports domain.
■ "Shishiro Cup - Offline -" x REBOO Sponsorship Overview
Through sampling for participating players, we will support the players' condition even from the backstage of the tournament. We will provide a new refreshment experience that "regulates through breathing," which can be utilized in situations where instant concentration switching is desired, such as before matches or during breaks, further accelerating the "passion of immersion."
■ Event Overview
Event Name: Shishiro Cup - Offline -
Dates:
April 11, 2026 (Sat) 11:00 AM Doors Open / 12:00 PM Start
April 12, 2026 (Sun) 11:00 AM Doors Open / 12:00 PM Start
*Performance times may change. Please be aware in advance.
Venue: Yokohama BUNTAI (2-7-1 Furocho, Naka-ku, Yokohama-shi, Kanagawa 231-0032)
For event details, please see below:
https://shishirohai-offline.hololivepro.com/
## About REBOO
## Background of Sponsorship
BREATHER develops products that spread the unprecedented "value of breathing" to society through experiences that make "breathing deeper, more enjoyable, and innovative."
In the world of esports and streaming, prolonged high concentration and the need for instant switching during breaks are key to performance. The extreme concentration required in fighting games and the brief rest periods in between—how can these moments be transformed into high-quality refreshment?
"REBOO" supports the passion of players and spectators by regulating their condition through "inhaling deep breaths" and enhancing the quality of their transitions.
This tournament, "Shishiro Cup - Offline -," hosted by Hololive VTuber Shishiro Botan, who has over 1.56 million YouTube subscribers, is a popular event that includes professional gamers, streamers, and publicly recruited players. This tournament, which recorded a maximum of 200,000 concurrent viewers online, is now finally holding its first real-world event.
BREATHER will support the performance of athletes and spectators with the "power of deep breathing" at one of Japan's largest and most passionate stages in the VTuber x esports domain.
■ "Shishiro Cup - Offline -" x REBOO Sponsorship Overview
Through sampling for participating players, we will support the players' condition even from the backstage of the tournament. We will provide a new refreshment experience that "regulates through breathing," which can be utilized in situations where instant concentration switching is desired, such as before matches or during breaks, further accelerating the "passion of immersion."
■ Event Overview
Event Name: Shishiro Cup - Offline -
Dates:
April 11, 2026 (Sat) 11:00 AM Doors Open / 12:00 PM Start
April 12, 2026 (Sun) 11:00 AM Doors Open / 12:00 PM Start
*Performance times may change. Please be aware in advance.
Venue: Yokohama BUNTAI (2-7-1 Furocho, Naka-ku, Yokohama-shi, Kanagawa 231-0032)
For event details, please see below:
https://shishirohai-offline.hololivepro.com/
## About REBOO