In general, we expect people to be able to identify their family on sight, even if it’s just from the backs of their heads. After all, for better or worse, these are the people we grew up with, right? Who couldn’t pick their little sister out of a crowd based on nothing more than their profile or haircut?
Well, probably not many people, if we’re being honest. Hey, we may love our families, but we’re not spies. But it’s completely different when you mistake someone else for your sister when they’re not even the same species! Just ask this embarrassed manga artist, who had the sense of humor to post about her error on Twitter so we could all have a good laugh.