(#オーイシ武道館) What is the story behind this trend in Social Media today?
22-09-2026
The hashtag refers to the third Nippon Budokan one-man concert by anison singer オーイシマサヨシ, held today. He first reached the venue in 2024 to mark ten years since his anison debut with the opening theme from Gekkan Shoujo Nozaki-kun, followed by a second show in 2025. The current date is the third installment in that series, with a separate acoustic concert under his original name 大石昌良 scheduled for the following day. Fans have used the tag across all three events to share excitement, setlists, guest appearances, and the inexpensive live-stream option that accompanies the shows. The artist built a reputation for high-energy entertainment mixing original anison hits, collaborations, and crowd interaction, which is why the concert and its hashtag are circulating widely today.