Japanese teenager Yota Moteuchi has a problem, he's in love with his classmate Moemi, but can't bring himself to ask her out. Even with the help of his friend and high school heart-throb Takashi, his reputation as the dateless wonder and his lack of courage are a curse that seems impossible to overcome. Now, in the midst of the all-too-short winter vacation from school, Yota sees his chance to win Moemi's heart. Little does he know that his fate waits just around the corner, and the name of the one who will change his life is... Ai.

Shy Ichitaka has a crush on his high school classmate Iori, but ever since she posed for semi-provocative swimsuit photos in a magazine, she's had a lot of sleazy guys hitting on her. Ichitaka's afraid to make his feelings known for fear Iori will think he's just another creep.

Jin, a mysterious kid with a halo carved in his hand, and extraordinary fighting skills, lives with his grandfather in a beggar's community. In other place, the old scientist Amagi is searching for professor Kanzaki, to ask him for the whereabouts of the "player" -a kind of genetic altered humans- Zet, which they created some years ago. Soon, Jin and his grandfather are attacked by a mysterious man who turns into a monster. The connection between professor Amagi and professor Kanzaki, seems to connect also young Jin to the mystery of the "players" and Zet.

Tsuyomaru is a girlish boy while Hazumi is a tomboyish girl. Tsuyomaru is challenged to a fight by a student of another karate school, and while using a training machine operated by Hazumi, something goes wrong and they switch bodies...

Japan in the future has a massive over-population problem. Scientists have traced the root of this problem to one particular individual, Junta Monamari. According to their records, Junta was a "Mega-Playboy" who had sired children with over a hundred women. Each one of his sons had inherited the Mega-Playboy gene too, so the problem grew exponentially from thereon. Enter Karin Aoi, a "DNA Operator". Karin is sent back to the past with a mission: to alter Junta's DNA and prevent him from ever becoming the Mega-Playboy, thereby eliminating the world's overpopulation problem. Junta's DNA can only be altered by shooting him with a special bullet called DCM which contains the chemical for suppressing the Mega-Playboy DNA. In return, Karin gets a vast sum of money... enough to make all her dreams come true. Will Junta become the playboy he is destined to be, or will his better self prevail? But Karin is falling for the real Junta too... and what of the sweet and kindly Ami who has secretly loved Junta all her life? What will happen to future Japan?

Eiji Matsuda finally managed to go out with Emi and promised to agree on the condition that they can't have sex. After 6 months he decides to break this promise.

A touching story of a doctor who wanted to help people even though he became a vampire.