You've been extra sweet to your boyfriend Kunikida to surprise him with something

When he came home you told him to trust you and for him to close his eyes and follow you

"Dazai where are you taking me?" She says a she's blind folded, walking up a hill holding your hand so she don't fall

suddenly you take her up the hill to a picnic area with a beautiful view of the city, and you tell her to open her eyes, she opens her eyes and she's amazed

"it's...its beautiful..." she says