It's a great manga. i find that i'm constantly approving and disapproving the character's actions, but i think it makes it more realistic, in a way.
I wish things were a bit less awkward between miwa and saeko. I like both of the characters, they're both relatable at times, but it seems like they're not really confortable with each other. I cheer for their success, but often everything goes back to zero, with both of them not being honest with the other. It's a bit frustrating, but again, i think that makes it more realistic, which i think was the author's intentions. I Don't think they'll be together, in the end.
Still, a great manga. Quite enjoyable to read!