Summary : This is a "Girl's Diary" of four very different girl's lives recorded in four short stories.

1. The O Girl
A girl who is confessed to by a fellow classmate says "lets start as friends" but she finds him annoying. How will it end?

2. The S Girl
There's a guy and a girl. Rei-chan (the girl) has always liked the most popular guy. He treats her as a slave, but she ignores him. What will he do?

3. The Girl in the Legend
Yamata Tanoko is smart, not very good looking and her name is not remembered by any of her class. When popular guy Nota Sakami asks her to accompany him, she wonders why. Is there a reason?

4. The Negative Girl
Whenever she is with a boy, Hinako has only bought him bad luck. She swears to never fall in love again, but then she meets the flower shops nephew,,?

Haruka Nakatani, a boyish girl, transfers into an elementary school where her new class is strictly divided into two groups: girls and boys. But because of this unusual girl, who loves to play baseball, the class atmosphere is about to go through a change as well as Haruka herself... (Source: MU)

Aoishi Hanae is a 33-year-old woman who has a job, but no boyfriend. In fact, she's also still a virgin. It's not that she never had a chance to lose her virginity, but she let the chance pass by. At a drinking party with her colleagues, Hanae ends up confiding in Tanokura Yuuto, a handsome young 21-year-old part timer at her company who also attends college, and who has recently broken up with his girlfriend.

The next morning, she wakes up in a hotel next to him, and learns that they apparently agreed to start dating and then had sex that night. She has only hazy memories, and has no idea how to deal with the situation. Yuuto is shocked that she doesn't remember, but hopes that they can still date. How will Hanae, who is older but much less experienced in romance, handle her surprising new relationship with the younger and more experienced Yuuto?

(Source: MangaHelpers)

Hayato works at a restaurant and has a crush on Shouko, the other part-time worker. However, he just can't seem to find a good way to confess his feelings, especially after finding out that Shouko's previous boyfriend passed away in an accident. It's around this time that a construction worker/moonlighting magician named Kai wanders into their restaurant. Hayato quickly becomes friends with him, but why does Shouko seem so surprised when she sees him? This is a collaboration between mangaka Fujimura Mari and the J-pop band WaT featuring Wentz Eiji and Koike Teppei.