Hitomi the math female teacher at D-Mani Highschool school she is one of the smartest teachers problem is she dislikes people with bandage or people with tattoos. the main male character has this bandage cause he wanted to cover up the tattoos. its a special tattoo that makes u smart by 10 times compare that to an average student. theres a grandpa who owns this school he takes it very seriously when it comes to bullying. and he says the special tattoos is okay to have in this school. the thing about the special tattoo is makes the user very tired if he or she uses it too many times in one day.