Takuma Watanabe

Ami, raised in China, is a high school student who practices Chinese martial arts and swimming. She comes back to Japan because of her mother's remarriage. Hiroshi, a careless college student, likes to take women’s pictures secretly. Hiroshi goes to a girls swimming pool locker room to take photos with his friend, Takimoto. When he gets home, Hiroshi sees Ami whom he saw at the locker room. Ami's mother and Hiroshi's father gets married and they go on a honeymoon, leaving the two alone in the house. Whenever Hiroshi tries to get near Ami, her martial arts prevents him but gradually they become closer…

Takeshi Hongo is a promising young man with a passion for motorcycle racing. However, his dreams are suddenly ruined when he gets kidnapped by Shocker, the evil secret organization planning to dominate the world. After being remodeled into a cyborg, Takeshi escapes and swears to protect the world from the inhuman monsters.