The Loner and The Aggressive Other
In this AU Giyuu and Muichiro are friends and Genya is also friends with them they hang out most of the time and Muichiro and Genya even started dating it was all nice and all but then Giyuu got send on a new mission on his own Muichiro and Genya insisted on going to but weren't aloud to, Giyuu told them it's fine and...