Why?There are two reasons you'd want to change your age :
A:You got older and the age on your プロフィール is no longer true(In which case,you shouldn't worry because ファンポップ automatically increases your age with each Birthday)
B:You want to look younger because you're a pedophile and that's the only way kids will want to chat with you,in which case click "Edit Profile" and 移動する your birthday a few years back and Voila!
