1-2. Ayu
Ayu is a new exchange student in Takumi's class, and for some reason Takumi can't take his eyes of her.... But wait, what if Ayu can't take her eyes of him as well?
3-4. Kana
After seeing how her elder sister 'catched' a nice boyfriend, Kana learns the joys of being a couple and decides to give it a try... Even if she has to steal a sweetheart from someone else.
5-6. Ayu Kana
Further explain how the sisters develop their relationships with their respective boyfriends.
7. Futari no Ketsumatsu (The Couple's Decision)
It's the story of a little girl, that's growing both, startled & curious on how is her younger brother's body is changing, and how they eventually bond for years to come.
8. Zutto… (Always)
A girl named Megumi discovers that her oni-chan enjoys taking pictures of her.... But what kind of pictures? And for what purpose?