I have also been reading it of late. Although I still haven't finished even a single route. It has some really funny scenes, many of them arising from the main character's weirdness. Sagara Sousuke is exactly the character I was thinking of as well when reading it. The slight difference would probably be the deeper darkness in this dude, which shows in his more cynical and pessimistic attitude. Being suspicious of everything and everyone is the same, for sure.

From my perspective the weakness of this VN seems to be the feeling of repetition I started to get. It's almost always the same few places, the same very limited number of people, and thus it feels like almost all the scenes will end the same way as well because the characters are so quirky you soon predict how they will act. I wish they had at least drawn more backgrounds.