Other H&C 'disliker' here, and agreeing with you.
I really got sick of the Ferris wheel iconography, love hexagons, ending which left the story unresolved and not to mention nothing really happened, boring protagonist, boring protagonist goes on journey around Japan on his bike to find himself (wait, what?).
I would've given it around 60ish, because the piano melodies were nice. But that's about it, because every episode had some insert song made by the same two boybands and it just got really tiring really fast.