The story revolves around four teens - the good-looking twins Asaba Yuuta and Yuuki, the effeminate Matsuoka Shun, and the class head Tsukahara Kaname - who have known each other since early childhood. While they are not necessarily good or bad friends, they continue to hang out well into high school. The half-Japanese transfer student Tachibana Chizuru joins the circle of friends in this comedy about the everyday life of adolescence.
The gang goes over to Kaname's house to deliver tangerines and much to Kaname's chagrin they stay for dinner and invite themselves to sleepover. Hijinks ensue as they reminisce about the past and joke about each other's idiosyncrasies.
Chizuru begins to openly show his feelings for Masaki and decides to prepare a Christmas gift for her despite knowing her feelings.
On Christmas Eve the gang runs into Azuma-sensei and his childhood friend, Akira. While trying to help a little girl Chizuru accidentally knocks over a Christmas tree forcing all of them to dress up and work with Akira as Santa Claus.
On New Year's Eve, the Asaba twins have a fight.
On New Year's Day, the gang visits a shrine to pray for good luck, but things happen to derail their plan.
Kayo is quitting her job in the cafeteria to pursue a career in a salon, and Yuuki is unsure of how to think of it.
For Valentine's day Masaki spies a girl from another school confessing to Shun, leading to a realization of Masaki's feelings of hopelessness and Chizuru's own feelings.
Shun worries about how fast his little brother's relationship is progressing - he thinks kissing is too early for middle schoolers. He calls over the gang to discuss the "emergency" which only worsens his anxieties. As a result the gang spies on his hormonal brother's date, and hilarity ensues.
Reminiscent of the first episode of the first season, the boys complain about how Kaname wastes money on buying tea, which leads to the gang persuading Yuuki to get a part-time job. Lazy Yuuki eventually folds for the sake of buying a new video game and lands a job as a waiter. The gang visits him on the first day of work leading to a messy situation and Yuuki losing his first kiss.
Mary and Chizuru have been avoiding each other since Chizuru's confession that he likes her.
As the gang's third year begin, the sport festival is on the way.
Kaname spend dinner with his neighbor who he likes, only to find out she is getting married.
Shun is troubled about his future as everyone else seems to be more prepared than him. Also, Chizuru, Yukki, and Kaname visit the Tea club with Shun and Yuta.
