Ryuu ga Gotoku Kiwami's game-specific mechanic, featuring Majima Goro ambushing protagonist Kiryu Kazuma in the most unlikely of places while wearing the most unlikely of costumes in order to "hone Kiryuu-chan's fighting skills".
The sheer absurdity of the above scenarios has led to it being memed among the Japanese and later global fanbase. Depictions of such will usually involve Majima popping out of a manhole, Majima wearing a police uniform, Majima crossdressing in a cabaret hostess or female idol costume, or Majima breaking a wall or door and entering a room Kool-Aid Man-style. Shouting "Kiryuu-chan!" optional but highly recommended.
This is also sometimes parodied using other characters in place of Majima. These will usually involve the "popping out of a manhole" variant, with said character lifting up the manhole cover with one arm while making a "shielding one's eyes to look far ahead" gesture, both in imitation of Majima's pose. Accompanied by their "title" and name as a caption. The character will also often suggest sage(-sounding) advice to another character while doing so.