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Character Outline
Haru's Father is a math teacher in a university. He often helps his daughter with her math and, according to her, he usually treats her like a baby.
Plot Overview
Daily Life Arc
When Tsuna was working on a math problem that he and the others couldn't solve, Haru called her father to help them with the problem. To try and prove that Reborn was the rare genius mathematician, Dr. Borin, he purposely gives the wrong answer to the math problem. Reborn then gives the correct answer, leading him to the conclusion that Reborn is Dr. Borin. Later on, he asked Haru to go the eyewear store to pick up his glasses because he was extremely near sighted. Haru then used these glasses to help I-Pin see better.
Future Arc
In the future, he and his family had moved out because of the danger they faced while Millefiore was elliminating every single person assosiated with the Vongola. Before the left, they left a letter for Haru in her room.