van fanel visiting hitomi often on earth in a fleeting, i'm-here-but-i-can't-stay-long way ;3; goddamn you, escaflowne THAT ENDING WAS UNACCEPTABLE

also not exactly headcanon (since it's on their schedules) but the early morning kitchen shenanigans of masato, natsuki and tokiya. with natsuki blowing up the entire thing and masato and tokiya cleaning up the mess.