Aoki is an impulsive, goofy high schooler who borrows an eraser from cute Hashimoto, the girl sitting next to him. He sees that she has written the name "Ida" with a heart by it. Aoki concludes that Hashimoto must have a crush on Ida, the quiet reserved boy sitting in front of Aoki. As Aoki has a crush on Hashimoto, this is very disheartening and he drops the eraser on the floor where it is picked up and seen by the aforementioned Ida. In an attempt to save Hashimoto from embarrassment, Aoki claims the eraser as his own. To Aoki's great surprise, Ida tells him that he will seriously think about having a romantic relationship with Aoki. This triggers a series of romantic misunderstandings and escapades involving himself, Ida, Hashimoto and Aoki's best friend, Aida.
It's rare to find a series filled with characters who are so compassionate and hilarious at the same time. The actor playing Aoki is definitely the comic center as his deception eventually leads to him developing real feelings for Ida. (His reaction to this realization while bathing is absurdly comical). The serious-minded Ida and overconfident Aida lend able support. But my favorite character has to be Hashimoto, the short, cute, sweet girl with the temper and "strength of a gorilla." (The scene where she angrily slaps Aida to the ground is rewatchably funny).
But even the supporting characters are quirkily interesting: the overeager class president and his wet-blanket of a vice-president, the perpetually cheerful volleyball captain, the youth camp's Rambo-like mountain guide, the two lovebird students swooning over each other and many others. I also appreciated the positive portrayal of their teacher, Mr. Tanaguchi, who lends quiet support to all of them without the students being really aware of it.
The two romances that develop don't have much "heat" (they all seem like good friends rather than romantic partners) but this is minor. In the end, the series' goal is to make you laugh and maybe encourage you to think just a little bit about love, compassion and friendship.