Sekido attended Hogwarts school of Witchcraft and Wizardry in his 7th year He is not very talkative to other students. Even if other students attempted to talk to him, it ended up badly. He was quite popular with the female students.

Currently every student was in the Great Hall with the other students at night as it was the Triwizard Tournament. The names were picked by the headmaster. One from Durmstrang, one from Beauxbatons, and for Hogwarts, Sekido was chosen to participate.