I should say I liked both, how normal was the protagonist and how he had developed over time as well as well-executed strings theory.
MC is likeable, slightly pervy, but not annoying type and actually appreciative by the females. Most importantly, even though you get the feeling of MC being air-headed, he is not and you could even sympathize with him.
I would love to have seen a bit different ending but nevertheless this one was good as well.
IMO, it is a good story, definitely has small potential for S2, but truly, there is no need for it.