A revised version with a happy ending.
After moving into his apartment, Hibiki aims to be a teacher so he can pay the rent. Unfortunately, the nearest school won't hire him due to his gender. When his landlady, Lulu, hears of it, she decides to help him get past it by having him masquerade as a woman so he can get the job.
Once there, he starts teaching the PE class. Between teaching and trying to keep his identity a secret, he finds himself in a lot of mayhem. However, it helps that one girl in his class, Fuko, is falling in love with him without him knowing it.
After a hospital stay due to an accident, his identity is compromised by Reiko. When the board meets the next day, Hibiki is fired. Then, when the board decides to discuss making the school girls-only, Fuko, who had been eavesdropping, voices her opposition. When Chieko, the principal, gets into a heated argument with her, it doesn't end well: Chieko calls all of Hibiki's students a very horrible epiphet, and Fuko retaliates by calling her a misandric (censored) to her face and assaults her, getting herself expelled in the process. Fuko, in one last act of defiance, declares that she intended to drop out anyway and curses at her before running out in tears.
Fuko runs over to Hibiki's apartment only to find Lulu there with a suicide note. Fuko runs over to where Hibiki intends to kill himself and tries her hardest to talk him out of it. She manages to succeed by telling him she and the rest of his students plan on giving him a surprise.
The next day, Hibiki returns to find his students, as well as the school's entire male population, on strike and refusing to attend classes unless Hibiki is able to return. Chieko tries to use force to break up the strike, which proves to be her undoing when Lulu, who reveals herself as the new leader of the school system, shows up to see her attacking a boy and fires her before hiring Hibiki back, reinstating Fuko to the school, and revealing “she” was actually the last male teacher at the school before Hibiki. Upon hearing this, the strikers return to class, and Lulu wishes Hibiki luck with his job.
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