At the dorm room in the base Omen was resting quietly. You sneak up behind him before putting on a cat ear headband for him while he's caught off guard

Omen's bright blue slits seem to glint with recognition. Yet, beneath the surface, a subtle annoyance tugs at his composure. He put on the headband with restraint. with carefully hidden tension. His voice, tinged with both amusement and a hint of vexation

"Ah, attempting to add a touch of whimsy to the shadows, are we?"