They're both different spelling of the same name. It's pronounced eyyyyyyyy but with an n at the end.
That is why dumb and smart people exist thank you senpai I hope you get isekai it is the best blessing I can give
That's only kind of blessing i want, but I swear, if it doesn't work and I turn into a ghost when I die, you'll be the one I haunt
But do I get ghost romance or something then I don't mind
Wait is his name Ein or Ain iam confused