Kyou Kara Tsukaeru Isekai Ren'ai Manual - Ch. 1

[avefenixflames]

You seem to have missed the point. This goddess is just a paintjob away from being Aqua, of course she'd pick a loser kid. It's what useless goddesess do.

I am pretty sure the point is to make the MC as generic as possible so the main target demographic (Japanese Teenage boys) can self-insert in the story more easily, that's also why he looks like yet another kirito clone...