Itai Itai Itai manga is about a love triangle between High School boys, including Tachikawa Shikou, High School's Judo club president, Narumi Shusaku, member of Judo club and Ukeno Taiga, Shikou's friend and classmate. Which love will prevail?

Part 1: Zeus is sick of all the hate, envy, and violence that humans cause on Earth. So he gives Priapus the important task of making all human males homosexual, in order to destroy any means of humans to leave behind children. Priapus descends to earth, meeting his first target, Ousuke Sakura.

Part 2: Priapus continues the mission that Zeus sent him on. This time Priapus ends up in rural Japan and meets his next target, Honda, a police officer.

Part 3: Priapus plays around with a delivery man.

Part 4: Priapus shakes up a Yakuza boss.


NOTE: Bruno Gmünder's published version includes:
- Priapus 1-3
- Gachinko Battle! Full of Meat
- 1/4
- 1000 Meters Underwater from Short Stories (Mentaiko)