Shit.

A blonde-haired boy lies on a bed with a purple-haired girl, hugging her from behind; the scene cuts to a close-up of his wide, glowing eyes with the text "H-Huh?", then to his face with a blush and the name "Serinuma," before returning to the couple where he whispers "You're so cute!" and she reacts with surprise, asking if he is still asleep.