In my view people are underestimating this anime.
Recommend seeing 3 episodes before of drop the anime, mysteries begin starting the episodes 2~3.
Watch 3 episodes before of give the note for the anime please.
I must also say before that if you do not like animes with hot scenes that appear panties and etc. .. you should avoid this anime, although my goal here is to give you a chance to show.
For me, the author of this work is doing a very good job at getting to have both an anime thriller with a theme so simple, I see that many people did not understand the essence of the work (his main focus is the suspense, you should not expect he works upon the characters and how their feelings etc. ..) and I come here to try to convince people to give a chance to the anime.
Good talking a little anime itself.
He tells the story of a son of an owner of a large company who dies and leaves everything to his son but for him to assume the company he has to get married first, on the day of the funeral of his father appears a person saying his sister by (his father would have had her with another woman who is not the mother of the protagonist), the protagonist moves to a school after the death of his father to find a woman to marry, but before that he needs solve this mystery and find out who is his supposed sister by father (because he does not want to marry his sister.) The anime is totally focused on this mystery and to help in this development appears several other girls in the protagonist's life when he starts attend the college, the anime works fine its mystery story leading you to believe that is one of the girls and it's nothing you of a smack in the face and you already start to distrust another person holds the anime and you're wanting solve the mystery and find out who is the sister that, if you love to solve mysteries and uncover clues like a detective advise you to watch this anime.
Proof of it all, is one that appears 2 or 3 girls with the same cell that changes the voice, the question is which of the three who can be? Or is it someone else? Who supposedly said on the radio for the school Shougo (protagonist) who stop looking for her sister? Who was the girl who called him six hours every day? Whoever stole the phone of one of the girls who had thrown it in the trash? Whom is actually the person who helps Shougo and lives on his side?
That's just some of the mysteries that await you, who seek to be unraveled by someone!
How about you become a bit like detective?
Note: Since the goal of the anime is the suspenseful if I dwell too much on his description I could end up giving spoilers and many Eventually grace.
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History: 10
Suspense is the essence of this anime, and he is very well done in this part, as I said above still can not solve the mystery, and keep seeing the episodes to see if I can find any clues.He will play for one side to the other and making you believe a track that is not true and nothing you're already distrusting someone else (as I said above), every detail leaves you intrigued and each new track makes you seek links with other previous tracks to try to solve the mystery, it really is exciting in that respect.
Art: 9
The anime art is good, and very detailed, perhaps a bit too colorful and glossy, but you get used to it,scenarios are well made in every detail and the characters also has appearances quite pleasant with well defined traits.
Characters: 7
I think it might be one of the weaknesses of this work, I really think that it ta strong in its suspense because the characters do not make you like them, do not have a work upon the feelings of the characters, what they think, what they think, really the whole work is focused on suspense.
Sound: 7
The sound should be the weakest part of the anime, are not well placed, in the opening scene has a sound more or less, the closure is a bit better, if you expect an anime Kimi to Boku like that in my opinion has a fantastic sound and good choice of songs, Kono naka probably will not suit you.Some scenes even have music and they do not fit the times he has, but as the anime style is mystery, suspense think to understand a little of that side, the strong anime of this genre does not have to be sound (is how I see it)
Enjoyment: 7
The anime is fun and provide a sense of wondering what will happen next, if you expect an anime filled with comedy, comedy scenes without forced and more natural, you probably will not like this anime.Now if you expect that anime makes you actually engage with it, try to understand what goes into it, that detail is what this show is for you.