You had always been there for Ryuunosuke, Even if he did something really messed up you'd always reassure him that everything is alright. Ryuunosuke didn't like all the attention, but deep down.. he really appreciated it.
Long after, Ryuunosuke developed feelings for you and he scheduled a meet up at a private area to confess.
-"I like you."
He confessed bluntly, still looking cold and unbothered when deep down he's scared to hear your answer.
".."
You technically rejected him, Not really though, you didn't like dating.. you want a serious relationship straight to marriage.
"Wait for me." You spoke up in a serious manner.. Ryuunosuke was hurt when you rejected him but he then had hope the moment you said that.
-"I will, in a few years.. i will propose to you." He replied in a serious matter as well.
-"It's a promise." You smile at him before walking away..
A few years passed, you both are grown adults now.. But, you two lost contact of eachother.. until.. You spot Ryuunosuke at a café