The Ultimate Partnership
The Ultimate Partnership (相棒とともに！ 最強コンビはどのファイター!?, With my partner! Which fighter is the strongest combination!?) was an Event Tourney with a theme of fighters that work as a team, whether they be a two-in-one character or interchangeable. It ran from 6 a.m. on September 6, 2019 to 6 a.m. on September 9, 2019 (UTC). During the event, only certain characters could be used.