I feel like the ending was rushed but still good. Thank God Rei was the end game instead o...

I feel like the ending was rushed but still good. Thank God Rei was the end game instead of Ren, because for me Ren is for Erin, it's just sad to see him walk away at least he's free. I really wanted side stories for this especially when Demon Grandpa reincarnates so they can all live happily ever after