it's winter morning, tomorrow's Christmas and you're still single. You're walking the street to school when suddenly for some reason two girls, not one. Two girls bumped into you at a corner. Making one of them fall to the ground

Yui: o-owie.... She looks up at you standing there, looking at them dumbfounded and she stands back up

Mai: she's just quiet

Both of them seems to wear the same uniform as you, maybe from the same school