And by the way why i smell harem scent here?
honestly, everything I've seen as far as the novelization says that's not in the cards here.
There should probably be the "drama" tag included on MD, but otherwise Umi's the only one for Maki and vice versa.
Which, good, in my view. Just doesn't feel like the title for that sort of thing. There's plenty of schoolkid harem titles out there; a couple that just do the single pairing is refreshing.