Masayoshi Oishi is a performer confirmed for the AZUR LANE MUSI9 FES. event in September 2026, and he previously made radio comments about an otaku anti-war protest that drew a response from the protest's organizer.
Masayoshi Oishi appears in two recent Yomimono stories with no overlap between them. The first, from June 2026, lists him among the performers for the AZUR LANE MUSI9 FES. event, the 9th anniversary celebration for the smartphone game Azur Lane. The event is scheduled for September 5 and 6, 2026, at Shinjuku Sumitomo Building Triangle Square and Shinjuku Sumitomo Hall. Oishi is part of the first lineup of performers for the special live concert called AZUR LANE SPECIAL MUSI9 LIVE, which will take place on both days. Other performers include Yui Ishikawa, Konomi Suzuki, Yui Sakakibara, May'n, and Beverly, split across two days.
The second story, from May 2026, covers a response from Hiroyuki Takahashi, the organizer of a March 28 otaku anti-war protest in Tokyo, to comments Oishi made on his radio show. Oishi had questioned the protest's use of the otaku label, expressing concern that the protest might tarnish otaku or their oshi. Takahashi pushed back on that concern, asking whether otaku supporting war is preferable. The exchange highlights a split within Japanese fandom over whether otaku identity should be tied to political activism.
The two stories establish Oishi as a singer with a radio platform who is active in both game-related live events and public commentary on fandom and politics. No further details about his career, discography, or other activities appear in the provided stories.
Synthesized by Yomimono from the cited Yomimono stories below, each itself
sourced, then editorially reviewed. Every
fact links the story it came from.
Jun 19
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.
May 19
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.