Coji-Coji

Everyone has a circle of friends they hang out with. But even within a small group there are smaller groups of friends, best friends and, here's where it gets complicated, boyfriends and girlfriends. Sometimes relationships just develop in a way where you're not exactly sure what you are to the other person. Which is the problem Tsumiki has when it comes to Io. Io's as tall and easygoing as Tsumiki is short in both temper and stature, but he also seems to be totally clueless about how she's starting to feel. Yet, at times, he's almost too affectionate. It's just confusing and irritating. And their prankster friends Mayoi and Sakaki aren't much help. Especially Mayoi, as it gives her one more thing to tease Tsumiki over. Hime, the fifth member of their usual gang of five isn't much better, because she's not really well connected to reality anyway. Which leaves Tsumiki stuck in a quandary. Are she and Io just best friends? And is it worth risking that for what Tsumiki wants?

Kouichi Uehara is a fourth grade student living in the suburb of Tokyo. One day, he picks up a large stone which turns out to be a fossil of a baby "Kappa" sleeping underground for the past 300 years, and names it "Coo". Koichi and Coo become good friends and starts living with his family. However, Coo could not adjust to the life style in Tokyo and starts to miss his family. On a hot summer day, Koichi and Coo decide to go on an adventurous road trip to find his peers.

The Yamada family consists of Miiko, her brother Mamoru and her parents. Both of her parents have work, so they are usually busy during the day and are outside of the house most of the time. The troubles in Yamada family are usually caused by Miiko's lazy character and her clumsiness.

Miyazawa Yukino is the perfect student. Kind, intelligent, pretty and modest, it's unbelievable that such a person could exist. Little did everyone know Yukino's perfection was just a facade. An act to fulfill her desire for praise and admiration. Her life took a turn however, as a newcomer to their school Arima Soichiro topped the exam rankings. Arima is more than just intelligent, he's also kind, handsome and modest, an unbelievable person who can actually exist. Even worse luck, Arima found out Yukino's secret, blackmailing her to help him out. Their odd relationship soon develops into friendship and eventually into love. But can their love prevail through the many problems that come their way?