I can already kind of see where this is going from this one chapter alone.
Let me guess: He's going to do all kinds of stuff to not embarrass himself in front of her which will all ultimately slowly lead to him fixing his life, losing weight, becoming more handsome and ultimately since his life will be fixed already, at the end he won't really have anything to wish for anymore so his 'wish' will be something like "be my girlfriend".
I'm almost sure that this will end up something like this... and I want to see all of it happen anyway.