Oishi Masayoshi is booked for two live events: AZUR LANE MUSI9 FES. in September 2026 and COUNTDOWN JAPAN 26/27 in December 2026, where he says it is his first time at the festival. He remains a subject of dispute after radio comments questioning an anti-war protest's use of the otaku label drew a public response from the protest organizer.
Oishi Masayoshi's 2026 is a run of festival and anniversary bookings. The earliest of the three stories is not a booking at all: in May, Hiroyuki Takahashi, organizer of the March 28 otaku anti-war protest in Tokyo, answered radio comments in which Oishi questioned the protest's use of the otaku label. Takahashi asked whether otaku supporting war is preferable, and rejected Oishi's concern that the protest might tarnish otaku or their oshi. The exchange sets out a disagreement over whether otaku identity should carry political activism, and no follow-up from Oishi appears in the stories.
From there the coverage moves to live appearances. Yostar announced on June 19 that AZUR LANE MUSI9 FES., marking the ninth anniversary of the Azur Lane smartphone game, runs September 5 and 6, 2026, at Shinjuku Sumitomo Building Triangle Square and Shinjuku Sumitomo Hall. Oishi is in the first performer lineup, alongside Yui Ishikawa, Konomi Suzuki, Yui Sakakibara, May'n and Beverly, with the acts split across the two days. A special concert, AZUR LANE SPECIAL MUSI9 LIVE, runs both days. Premium tickets cost 12,000 yen with early entry and reserved seating; regular tickets go on sale in early August at 3,500 yen.
Then in October, COUNTDOWN JAPAN 26/27 added a second batch of 82 artists, bringing the lineup to 179 acts. Oishi performs on Saturday, December 26, and Hatsune Miku on Tuesday, December 29. Oishi wrote on X that it is his first time at CDJ. The festival runs five days at Makuhari Messe.
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COUNTDOWN JAPAN 26/27 announced a second batch of 82 artists on Wednesday, October 28, bringing the confirmed lineup to 179 acts. Anison singer Oishi Masayoshi performs on Saturday, December 26, and Hatsune Miku on Tuesday, December 29. Oishi wrote on X that it is his first time at CDJ. The festival runs five days at Makuhari Messe.
The television anime of Kazami Sawatari and illustrator Achiki's light novel series The Salty Koharu Has a Soft Spot for Me will debut on AT-X on October 6 at 8:30 p.m., with later airings on Tokyo MX, BS-TBS, WOWOW, CBC, and MBS. Masayoshi Oishi performs the opening theme "Sugar Salt"; HoneyWorks feat. Hoshikawa Sara performs the ending theme "Hatsukoi Reply." Tezuka Productions animates, with Fumihiro Yoshimura directing and Hiiro Ishibashi and Miku Ito in the lead roles.
Yostar announced on June 19 that the real event "AZUR LANE MUSI9 FES." commemorating the 9th anniversary of the smartphone game Azur Lane will be held on September 5 and 6, 2026, at Shinjuku Sumitomo Building Triangle Square and Shinjuku Sumitomo Hall. The event is themed around sound and is divided into two sections. The Festival Arena at Triangle Square will feature a stage for live performances and talks, plus a free-entry area with original food, drinks, and merchandise. The Sound Museum at Shinjuku Sumitomo Hall is an interactive space where attendees can experience attractions using music and voices. On both days, a special live concert called "AZUR LANE SPECIAL MUSI9 LIVE" will take place. The first lineup of performers includes Masayoshi Oishi, Yui Ishikawa, Konomi Suzuki, Yui Sakakibara, May'n, Beverly, and others, split across two days. Premium tickets, priced at 12,000 yen and including early entry and reserved seating for the live and an official broadcast, are available via lottery through the YoStation app until July 5. Regular tickets will go on sale in early August for 3,500 yen.
Hiroyuki Takahashi, organizer of the March 28 otaku anti-war protest in Tokyo, reacted to singer Masayoshi Oishi's radio comments questioning the protest's use of the "otaku" label. Takahashi pushed back on Oishi's concern that the protest might tarnish otaku or their oshi, asking whether otaku supporting war is preferable.