Tsukasa is very affectionate.

Even if you insist that he doesn't have to, he goes out of his way to do things like make food for you, buy you gifts, take you out to nice places and show you as much love as he can when he's around you. He definitely doesn't hide the fact that you make him happier than anything.

He's also very prone to giving you physical affection⏤ a lot of physical affection.

It's nighttime, and after rambling to you about some new musical he was obsessed with, he had fallen asleep in your arms, snoring softly and resting against your chest.