Looks interesting, but the fan rubs me the wrong way, probably from how creepy "don't taint my Sumika" sounded and glorifying her, she's human too afterall. I was expecting for it to be like, she definitely dislikes how Sumika truly is but ends falling for the "real" Sumika, but that'd be too predictable so them going for "helping her be a better "Sumika"" is fine too, I guess.
Let's see how it develops.