there is just too much to comment
1. she learns japan so fluently in only 3 pages
2. he gave her a hat that does not hide the ears at all (although I wonder why don't he just claim that she got a surgery done for it to looks like elf)
3. he own an island bitch, that mofo is crazy rich, he got the the house equipped with electricity and all, in the middle of isolated island, but can't afford a solar water heater or something
4. he learns magic from scratch to somehow able to use it by 'imagining' things, in just 3 pages, fuck, he was just told 'yup you got the invisible vessel' and booom, you can do it by imagining things. how come he never able to use mana before?
I won't be surprised if the appendix is the supposed 'invisible vessel'