Okay, so this is hard because on the one hand, yes, it is absolutely possible that a person like the one you described could exist and it’s not necessarily wrong to write one but like… as an asexual person, seeing a “closed off asexual alien” in anything is like the brain equivalent of nails on a chalkboard. You can keep this character, but if you do you should make sure that you show that he’s not actually emotionless, and that he does want and value connections. Your readers should know tha...