Kinda meh. Between the unfailing love of the Main Girl, the nervousness of the MC and whatever the hell that endng was, it feels like it should've been longer.
Like, maybe there was supposed to be more of an arc between the library girl and the Main girl, leading to a misunderstanding between the latter and the MC? Or maybe the library girl keeps pining for the MC afterwards? Or make the MC lose his Love HUD and go from there.
I feel like the artist just got told near the end of the penultimate chapter "we're not continuing this, move on". 1/2, didn't dislike but did disappoint.