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Sojiro SAKAKI
Sojiro Sakaki is a teacher at Gakuen Heaven. He is an adult with blue hair and is a smoker. He is a very strict teacher and is not afraid to punish his students. He is also very strict with himself and is always trying to improve himself. He is a very complex character who is both good and bad. He is a very interesting character to watch and is one of the most popular characters in the anime.