Talk:Ken Kaneki/@comment-84.27.113.8-20150428200942/@comment-24494906-20150428224725

When you change Kaneki's birthday, you have to make him either older or younger. Otherwise, you don't change the birthday.

They could have made him 3 1/2 months younger instead of 8 1/2 months older, but then you'd ask after the Auction arc: "He just turned 22; why is he still officially 21-years-old?"