After reading the synopsis and looking at the girl char, I am somehow reminded of Matsuzawa from
Watashitachi no Tamura. I mean, I know their have been a number of stories where a char says they are from outer space and whatnot, but I somehow found it very endearing how her char associated with the main protagonist. It'd be quite nice if it had a similar feeling as that was(though this looks like it's more light-hearted than that story was).