This is funny how people tend to hate this manga, but this is just incredibly and annoyingly realistic. That's actually how would things turn out if you'd be someone of the type of the MC. you don't like his personnality but that's just how most of us would react if we were in his situation.
Taking for exemple the kiss asked by the photo booth, that's obvious that a girl wouldn't just kiss you out of the blue if she doesn't have that level of feeling.
As for him acting all sulking and depreciating himself, not having an ounce of self esteem is just the way most people react when they have his level of self confidence.
In any case, I enjoy to redraw it and even knowing that we won't see them cross the line of actual romance soon enough I still enjoy this series and I know that the day we'll reach this goal that'll be awesome.