There's a lot that could have gone wrong with a premise about a high school girl in love with her adult step sister but I'm pleased to say that this manga is actually quite good and does not engage in anything unpleasant regarding the adult-child relationship. This is a story about an unrequited love that cannot be realized and how the main character, Uta, deals with it. Will she move on? Will she cherish her feelings even though they hurt her? As the title suggests, the crux of the story is whether Uta's feelings will ever be understood by her step sister and if so,what that would mean.

We also follow the object of Uta's affection, Kaoru, as she deals with a marriage to Uta's brother that is starting to show cracks. I quite liked Kaoru. Maybe it was just because she was cute and affectionate but I also liked how the story showed the loneliness she often felt.

A lot of people thought the ending was rushed. Personally I didn't have a problem with it because the epilogue ended things satisfactorily, but I do wish the author had either done a time skip much earlier in the story or written more chapters to wrap things up. While I suppose it wouldn't fit the themes the author was exploring, I would really have liked to read an entire manga about what happens after the story ended.

The side characters, Uta's friends, are also pretty decent and get a little bit of character development of their own.

All in all I would recommend this as a yuri manga that is a little outside the norm since it's not really a will-they-won't they scenario as is the case for many romance stories.