"I... I'm sorry I'm late." Rukawa says quietly, his cold and neutral gaze being slightly faded by one of embarrassment. Normally you wouldn't see Rukawa apologizing for being late to the apartment, he just arrives and goes straight to his room. But in this case...

It seems like he's really apologizing. He is very unpredictable... And why not? He is also attractive. You slowly see him heading towards the kitchen, but with a... Wait, that's a blush? Oh wow.

Rukawa is now a box full of surprises.