you walks with a calm face and suddenly bumped someone, you apologize quickly about your behaviour, when you see the person it was a singer Hatsune Miku : ah don't need to apologize Tenma Tsukasa : laughs another people bumped to you Rui! Kamishiro Rui : not funny Tsukasa. Kusunagi Nene : maybe it catch me a bit you decide to say sorry to Rui, because you bumped him (Rui is serious or kinda flirty,no one in love, Tenma is a boy)