Hopperman

Plot
Doctors Kazamatsuri and Onizuka are geneticists researching cures on diseases such as AIDS and cancer by performing experiments to strengthen the human body. The test subject is Shin Kazamatsuri, the motorcycle racer son of Doctor Kazamatsuri. Unknown to them, their operation is funded by a syndicate group, who plan to use this research to have the bodies of men strengthened for their own gain—they have already been experimenting in the field of cyborg soldiers, to a less-than-successful attempt. However, they did not count on Onizuka's own secret ambitions; the mad Onizuka wanted to create a new species, by fusing a grasshopper's DNA with the test subject's, in order to start a new civilization and be their god. He has tested on himself, but seems to be having greater success with Shin.

Meanwhile, a murderous creature is stalking the city, while Shin dreams of it. While he believes he is the one causing the murders, he eventually finds out Onizuka's plan and discovers that it's Onizuka who has been behind the killings. Onizuka has experimented on himself and altered his genes, making him a humanoid grasshopper; the telepathy of grasshoppers allowed him to communicate with Shin, resulting in his witnessing the murders.

The syndicate learns of Onizuka's plans and have him institutionalized. As if the syndicate were not enough, a CIA agent tracks Shin and wants him eliminated, for he doesn't know the true threat he could pose. The repulsed Shin digs to find out all he can about the experiment he foolishly volunteered to be a part of, which is now altering his body and putting him and his loved ones in danger.

Characters

 * Ai Asuka (明日香 愛)
 * Daimon Kazamatsuri (風祭 大門)
 * Iwao Himuro (氷室 巌)
 * Goushima/Cyborg Soldier Level 2 (豪島／改造兵士レベル2)
 * Giichi Onizuka/Cyborg Soldier Level 3 (鬼塚 義一／改造兵士レベル3)
 * Sarah Fukamachi (セーラ 深町)
 * Takuya Yuuki (結城 卓也)