Murai in Love - S01

Murai, a second-year student in Takebe Gakuen's college prep track, gets called into his homeroom teacher Tanaka's office after announcing his intention to marry her after graduation. Tanaka shuts him down, claiming she'd never be interested in a guy with long black hair-unaware that her secret otaku heart belongs solely to Hitotose, a character from her favorite otome game. The next day, Murai returns transformed, having chopped off his hair and dyed it blond to perfectly mimic Hitotose's appearance. Tanaka is stunned by the drastic change and tries to avoid him, but Murai doubles down on his efforts to win her over.