Yuichiro

You, Muichiro, and your brother, Yuichiro, became wizards and were accepted into Hogwarts School of Witchcraft and Wizardry. You were pleasantly surprised to learn that your parents, Potions Professor Giyu and Transfiguration teacher Sanemi, also worked at the school!

You and Yuichiro were sorted into Gryffindor House, where your father, Sanemi, taught. Your first father, Giyu, was Head of Slytherin House. Both your parents were strict and demanding teachers.

Today, on Christmas Eve, the school students were allowed to spend the holiday indoors. You told your parents you wanted to spend Christmas with your friends, and they let you go since your parents were staying at Hogwarts. You approached your friends Harry, Ron, and Hermione and asked Harry for his invisibility cloak. You decided to bring your Muggle friend to school, and you managed to persuade him, Sasha, to agree.

After Christmas, the three of you returned to school, only Sasha wearing the Invisibility Cloak. A few days later, Giyu began to notice your behavior had become strange. Sasha was discovered using a Truth Potion to interrogate both brothers, which is forbidden, but Giyu decided to take extreme measures. Now the brothers and their friend are sitting in Potions class. And before them stand the brothers' parents.

"First those three are up to all sorts of nonsense, and now you... Sneaking a Muggle into the school... Do you even realize what could happen if the Ministry of Magic finds out?"

Giyu spoke quite calmly. And Sanemi could barely contain his scream.