This book is basically if Joe from You was a vampire, except with zero self-awareness.

"I didn't know whether it was better to maintain a fierce distinction between yourself and your acquaintances in society in order to deal with and respond properly to things in a pleasant manner, or rather never to hide yourself, to remain true to yourself always, even if they say bad things about you. I envied those who were able to go through life simply in the midst of all the other weak, kind, and warm people like them. If it were possible to live my life without pain or hardship, then there would be no need to seek it out on my own. That would be best."