Yakuza 0 is an action-adventure game from Sega and Ryu Ga Gotoku Studio, first released in 2015 in Japan. Substories are the optional side stories that became one of the most loved parts of the game, known for mixing sincerity with bizarre humor. Clips linked to substories spread among fans because they instantly evoke that familiar Yakuza rhythm: a serious setup, then a strange problem no hero should have to solve. That recognition keeps the sound popular in game memes and parody edits.