This was a charming little experience! It could be described as Persona 3/4 without the drama and battling, or as a platonic dating sim, if you're into that sort of thing. Expect some routine anime shenanigans, with characters deep enough to be interesting. It's a very lighthearted, easy-going game, but all the characters feel "real" enough to give it sufficient depth.
My first playthrough took about four hours, and my second around two and a half. It's not a long game, but it's full of characters and personality, like a town from Paper Mario: tTYD, you can keep coming back to people for new looks at them. The game emphasizes making friends and being a well-rounded individual, which I think is as good a moral as you could get. I do wish there had been some forewarning about some aspects of the relationship-building dialogues. For example, you can only discuss a topic once with a "target," for the entire playthrough. Of course, this isn't a huge obstacle, and it only makes the game have stronger replay value.
Don't count on much action, or even multiple dialogue options. All of the gameplay focuses on skill-building, time management, and selecting good topics of conversation. This is simply a great game for those looking for solid characters and friendships in a quirky, somewhat-cliche anime setting. If there's a sequel coming out any time soon, as the end of the game implies, I'm very excited for it!