@Kuuroo It's probably not viewed as pedophilic since Japan has a lower age of consent than the US. 10 year age difference isn't that much when you consider a 27 year old with a 37 year old. People say you mature with age but that's not always the case. He seems pretty mature for a 17 year old.
When I read manga, I just think of it as manga logic and not try to take it so seriously. Like some of us are worrying about the inbred, some are worried about the age different, no one worries about talking foxes or crows. Lol.