Our First Night "Surprise in the Bathroom."
Miki and Yuu's parents go for a trip, leaving Miki alone with Yuu. Yuu is talking a bath, while Miki is in her room waiting for the bath and writing to Meiko. Yuu comes in her room telling her that he's done giving her her turn. She takes a nice hot bath and apparently takes too long. She wraps the towel around herself and then faints. Yuu notices and runs down stairs. What does he do?
Aired 15/05/1994EP 10 - Our First Night "Surprise in the Bathroom."

Marmalade Boy
Miki Koishikawa lived a normal life - until her parents tell her they'll get divorced.. She doesn't agree, until she meets Yuu Matsuura... the handsome son of another couple, with whom her parents are switching spouses. They all live together now in an enormous house, and Miki and Yuu find themselves falling in love. They'll have to struggle with their own feelings, other people who want to be with them, and whatever Lady Luck and Fate throws in their ways...
(Source: Anime News Network)