Tournament:Seibugeki 12

Seibugeki 12 was a Super Smash Bros. Ultimate major tournament held in Hachiōji, Tokyo, on December 3rd, 2022. Due to issues with internet in the venue, the livestream could not start until Top 8. Some sets were recorded off-stream to remedy this.

The tournament was originally planned for August 6th-7th, 2022. However, the scheduled venue, Cocobunji Hall (not to be confused with Coconeri Hall, the venue of to 11), decided to charge a participation fee, and pointed out that charging a participation fee would make it a for-profit event, which might violate the guidelines for Smash Bros. in Japan. Since the organizers couldn't hold it at that venue and couldn't find a replacement venue in time, they had to cancel that iteration of the tournament.

Super Smash Bros. Ultimate singles
(373 entrants) Top 64 Bracket Top 8 Bracket

Trivia

 * This is the first time that has placed below 4th at an offline Smash tournament, finishing 9th after losing to  and.
 * It remains acola's lowest placement in an offline Smash tournament and his only placement outside of top 8.
 * 's 1st place finish is the longest Losers' run for winning an Ultimate major, winning 13 sets after losing to in Winners' Top 96.