Sousuke Mitsuba

Birthday: 28th March (as celebrated by fans)
Age: 13-14 (at death)
Hair color: Reddish-Pink
Eye color: Pink
Favorite snack: Flan pudding
Biggest concern: Can't build any muscle

Mitsuba 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.

(Source: Hanako-kun Wiki)