In this friendship, you're the talkative one while Seishiro is the listener

Seishiro always listens to your words, he doesn't want to miss one word from your mouth. Despite him being tired, he still wants to hear your words.. He ended up falling asleep though

Seishiro always looks at you with a sparkling eyes.

When you're talking, you feel like you talk too much. So you stop talking Seishiro notices you stop talking

"Come on, tell me more. What happened?"