The art follow my standards and I they are quite good, I don't think they could have been much better in this area.
Story
I think the story is ok, it's not the best, but not the worst either. I mean I like the idea of it, but it does take shape of many other romance stories in anime I have seen before. But I do think it's unique in its own right, but what I think is the problem is that it needs unique things and twists to really make it a compelling story (Keep in mind this is my opinion).
Sound
I think the sound/ost is alright, I mean it does not differ that much from other animes, but that is not meant to be negative in any way at all. The sound/ost blends in fine with the anime, but what I think it lacks is something outstanding music, for example like the game Life is Strange, where they really make the music and actions intertwined.
Character
Now I don't think the characters is bad in any way, but I also don't feel they are that unique before. One could argue the sister is very, unique in the way she acts, but I personally don't think it's that interesting. Overall the characters are fine but could get more in depth and unique.
Enjoyment
This is where people might criticize me harshly, but I think the best about this anime is how enjoyable it is. I think it's not interesting, but it's like what family guy is for me. It's a show you can watch and relax looking it. Not necessarily the most compelling, but very enjoyable in its own way.
Overall
I decided to give it 9 out of 10 and you can see the reasons provided above.
