Junichiro Kagami's sister forces him to take on a real job, as a high school teacher. He uses his genius intellect to keep himself satisfied with his job. One day, he notices that one of his students is not getting along with her classmates.

It turns out that teaching is not Junichiro Kagami's true calling after all. With motivation at rock-bottom, he manages to survive for one month, a feat that demands celebration. But during his visit to Akihabara, Junichiro witnesses something.

Junichiro's next student is Seijuro Nanami, a monstrously strong former baseball player turned violent delinquent. With the help of a familiar face, Junichiro must earn the respect of the Monster of Icho Academy.

Junichiro faces off against Seijuro "Cyborg Human" Nanami in a game of soccer. Forcing Seijuro to play with the odds stacked heavily against him, Junichiro's victory seems certain. However, Junichiro's schemes are never what they seem.

Who needs school if you have a career? Who needs friends when you have thousands of loyal fans? Sachiko Tanaka is too busy for school, and Junichiro would normally agree. Will he find a way to get her to come to school? Will he even try?

Seijuro, Kisaki, and Makina each find out about Koutaro's true identity. Koutaro seems to be steadily getting closer to returning to school, but as always, Junichiro seems to have other plans.

Junichiro organizes a party to celebrate the victory of Team 23. He invites a surprise guest - Koutaro's former classmates - and challenges Koutaro to a fight. Koutaro must survive a hopelessly uphill battle to keep his secret.

Koyomi talks Junichiro into cleaning up the school boarding house, which had been closed off for a year. When its current inhabitant introduces herself, Junichiro is presented with the unique opportunity of working his magic on a dead student.

Truant Koutaro Araki finally gathers the courage to come to school, and instantly becomes popular. His classmates try to help make his transition as smooth as possible, but Kanan and Makina get involved in a slightly different way.

Makina's brother Kazuya can't seem to find his way out of his losing streak in a trading card game. Joe Odawara is in love, but won't be able to confess his feelings without help. Junichiro has answers for both of them... Maybe.

Junichiro's most troubled students have all found new, better lives - but at what cost? Junichiro realizes just how much of his old life he is sacrificing to help the kids. At the same time, a part of his old life pays a visit.

Junichiro accepts the invitation to the KEC research team. However, something inside him is not truly convinced that this is truly what he yearns to do. One day, a mysterious girl joins the lab as a one-day try-out intern.

It's time for Reiko to leave the KEC, but she doesn't want to. She fiercely refuses to obey, and her refusal provides Junichiro with the final piece of the puzzle to complete his educational policies.