Obocchama-kun

Chama comes to school after a long time and is very angry with Kakino. The reason is that Kakino has not returned the one yen Chama lent him. Why would the son of the Obo family, a very wealthy family, get angry over just one yen? It had something to do with the Obo family's philosophy. This is the story of the birth of a new Chama language, “friend-rich.”

Chama gets a cavity. In the Obo family, it is said that for generations, cavities grow huge and become fangs, and then fall out. However, Chama's fang keeps growing bigger and bigger, but cannot be pulled out. After much trial and error, they even mobilize a fighter jet to try to pull out Chama's tooth.

Chama gets a 40 on a test. He thought he would be praised by his father, but Kamemitsu says that he only accepts a score of zero, which has unlimited possibilities. Chama gets sulky and shuts himself inside. Kakino and the others try various ways to get Chama out of the room.

When Chama's body is examined with ultrasound, it is found that he is pregnant. The media comes and everyone is in a panic. To make sure Chama's body is safe, he goes to school in bed. Chama goes into labor in just three days. What in the world was born?

Fukurokouji comes to school on the biting turtles to compete with Chama. However, everyone around him is cold. Angry, Fukurokouji uses the biting turtles to make a surprise attack on the Obo family turtles. In order to fight back, Chama decides to awaken the giant turtle Gameron, who sleeps at the bottom of the Obo family's pond.

Chama and Kamemitsu mistakenly believe that Jiiya has only three months to live. Chama does his best to make Jiiya enjoy his remaining days, but in the end, in order to save Jiiya's life, they go in search of the herb of immortality.