Ginta's Confession "I'm Not Gonna Let Him Take You!"
Miki swears that she won't forgive Ginta for kissing her since they weren't in love. The next day, she tries to get up late so she won't meet Ginta but Yuu forces her out of bed. When Yuu and Miki arrive at school and met with Ginta and Meiko, Miki just hands Meiko her diary and leaves, Ginta angrily walks the other way. Meiko understood the story from Miki's diary. After school, Miki makes Meiko take her place as cleanup student and when Ginta calls her, Miki warned him to stay out of her sight before running off.
Aired 03/04/1994EP 4 - Ginta's Confession "I'm Not Gonna Let Him Take You!"

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)