Ken Ryuguji/Relationships

Takemichi Hanagaki
Takemichi meets Draken in the middle of his tough beat down with Kiyomasa. Accompanied by Mikey, the two greet him and it is decided that Takemichi will be Mikeys "bitch". After some time leaps, petty argument resolves, and a shaky rescue-- The two are shown to get along nicely

Manjirou Sano
Draken and Mikey are best friends and have known each other since the 5th grade. Their first meeting occurs when Draken is instructed to bring Mikey to a group of older kids for a fight. Obviously, the fight didn't last long and makes a lifelong impression on Draken kickstarting their mutual respect and friendship.