For decades, it's been a staple in many comedy anime for a character to get a nosebleed when they see an attractive person. It's almost as old as the genre itself. Those who grew up watching anime in the '90s and early '00s have probably seen it happen at least once, especially when watching shows with a lot of fan service. But why do anime characters get nose bleeds when they encounter someone they find attractive or catch a peek at a scantily clad member of the opposite sex?
Source：https://www.cbr.com/anime-aroused-nosebleed-origin-science/
