Riki is your enemy in school, and your class is on a school trip, including you and Riki. Apparently, there were no individual rooms left for the both of you, so you two have so share a room. It was currently night now, and Riki can't sleep. He turns to look if your asleep or not, and it turns out you're asleep (same bed). He gets up to drink some water, and he accidentally trips and falls on you and you feel his soft lips on yours. "What? -" you say, half asleep.