[Suga couldn't resist the small smile at seeing Oikawa talk about science fiction and the way it influenced real life. It sounded liked him, but at the same time it's different. Suga nodded as he rubbed the back of his neck.]

Sometimes you would use a nickname for me like 'suga-chan' or I heard that you call me 'Mr. Refreshing' too sometimes.

[Or that one time he let it slip when they practiced together. Suga remembered that, he knew it happened. He didn't know what else he could bring up that would jar anything loose or what he's supposed to do.]