Міцуба Сосуке

Mitsuba, real name Mitsuba Sousuke is a ghost haunting Kamome Academy Middle School's lockers. He was a student at Kamome Academy's Middle School division and a member of the photography club before his death.

After being recreated by Tsukasa, he consumed the at-the-time School Mystery No.3's heart and is now the current representative of the 3rd School Mystery