You gotta follow the order of these things, Souryuu. There's like 18 tiers before you get to kissing.
You stay away from tier 15 though.
Souryuu!!Hiryuu! I love you! Please, don't hate me!!Then do you love me?...I do love you.But kissing is a no-no.Hiryuu!!Kissing is also okay?Hate you? Why's that? I'm the one at fault, right?