The story is about teenagers, high school students. It's divided in two scenarios.

In scenario 1 "Depression Of Ai" the main figure is Ayumi, a les girl. She wants to get a cute pet girl, but it's difficult because most girls refrain from becoming a les. One day she gets a love letter from a junior girl Ai. Ayumi shouts with joy for that, though she doesn't know what kind of girl Ai is. Ayumi imagines that Ai will be cute and naïve. How will the following story goes? It puts on comic touch.

In scenario 2 "Last Party" three figures enter the story. Megumi is a girl who has many H friends. Takusi is one of them. One day Megumi invites Takusi to the last party and he agrees. He asks her about the party but she doesn't let him know what kind of party it'll be. He imagines one of group H with all her friends. At last the party day comes. His guess proves to be false. Megumi introduces just one junior girl, Kana, to him. What purpose does Megumi has? Why is the party the last?

[edited from Anime Densetsu]