Insteresting premise, good character design, not too keen on that girl, hopefully she's not what the "ecchi" tag is for, and hopefully this manga is not ecchi at all.
Looks promising. The elven-ear girl design is nice.
Just one little thing, page 15 secound pannel. Ther's something wrong but i'm not sure what exactly. It could be that guy at the middle that looks 2d or all that perfectly straight lines in the background. I'm not sure.