Ranked #6033

Kuro to Kin no Hirakanai Kagi.

Alternative Titles

Synonyms: Kuro to Kin no Akanai Kagi.
Japanese: 黒と金の開かない鍵。


Type: OVA
Episodes: 2
Status: Finished Airing
Aired: Feb 28, 2013 to May 30, 2013
Producers: An DerCen
Source: Unknown
Genres: Romance, Shoujo
Duration: 29 min. per ep.
Rating: R+ - Mild Nudity
L represents licensing company


Score: 6.061 (scored by 1,537 users)
Ranked: #60332
Popularity: #3715
Members: 3,895
Favorites: 12
1 indicates a weighted score. Please note that 'Not yet aired' titles are excluded.
2 based on the top anime page. Please note that 'Not yet aired' and 'R18+' titles are excluded.


Katagiri Kanade is a hikikomori who spent her days lazing off in her room. Her specialty is her broad imagination which often leads to various wild delusions. One night a weird cowboy guy appeared in her dream, saying that he's her heart's hero. Due to his encouragement, Kanade decided to try and go have a haircut the next day. It was then when she met a mysterious guy who cut her hair in the park, giving her courage to resume her school days.

Right after her haircut, A guy approached Kanade who turned out to be her former classmate, Sudou Yukio. Kanade used to like him back then, and he was happy to meet her again. Kanade lives with her non blood-related brother, Sonomura Ikuto. Despite Ikuto's warning, Kanade went looking for the mysterious guy who cut her hair the next day. She found him in the park, where he introduced himself as Hasui Tomoomi. He's a professional hairdresser and owns a salon named Azalea nearby. Since Kanade was absent from school for so long, her homeroom teacher, Konno Chihiro, offered to help her with her studies.

Having these guys around her, what will happen to Kanade's life from now on?

(Source: Love-Coloured Sky)


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Characters & Voice Actors

Konno, Chihiro
Konno, Chihiro
Hirakawa, Daisuke
Hirakawa, Daisuke
Sonomura, Ikuto
Sonomura, Ikuto
Hino, Satoshi
Hino, Satoshi
Hasui, Tomoomi
Hasui, Tomoomi
Mizushima, Takahiro
Mizushima, Takahiro
Katagari, Kanade
Katagari, Kanade
Sakuno, Airi
Sakuno, Airi


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More episodes Episodes(0/2)

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Opening Theme

No opening themes have been added to this title. Help improve our database by adding an opening theme here.

Ending Theme

"Dare mo ga Tadori Tsukeru Hazu no Sora e (誰もがたどり着けるはずの空へ)" by Antistar

Write a review | More reviewsReviews

Nov 5, 2013
I can't believe this OVA doesn't have a review yet!
Oh well I guess I'll be the first. I'm predominantly writing this review just to get the word out there about this OVA.

Are you a female? frustrated about how ecchi in anime almost always favors the male audience (like 95% of the time!)? over-sized boobs and annoying random female characters (That don't even act like an actual female!) everywhere? not to mention the random yuri that pops up from time to time =.='

Well fear not!! hope is not all lost in the ecchi category that it is directed towards the female population!! because let's be honest, read more
I found this review Helpful
Sep 16, 2015
Well.. This is my first rewiw, but Ill try to make it good.

I really don't get why this is not categorised hentai, but I guess there's not that much in it anyway. The female propoganists little brother might seem kinda sweet in the start of the first episode, but afterward he starts becoming so creepy that I had to force myself watching it to end. Some people might ship this relationship, but I honestly think it's too much. I mean, incest? Really? It could have been okay if the brother hadn't been so damn creepy. Even through the incest thing it has awesome characters which read more
I found this review Helpful
Feb 17, 2014
I won't lie and say that this is the best one. For a person who has seen a bunch of hentai, this OAV was a really nice change of pace. I'm quite picky when I watch these things and avoid anything violent and I must say this one was really awesome. Definitely my cup of tea. If you're a mature maiden who wants a pure love story with no strange lines and plots, just a normal love story, then I really recommend this.

I hope that they will be making more of this type of hentai. Vanilla hentai isn't the same before and I think this read more
I found this review Helpful
Jan 24, 2015
This is as to be expected; if you are interested in watching incest hentai, this one is perfect. The art is AMAZING and the intro & ending is also extremely well made. The beginning is a bit slow to show the romance, but later on, it'll be clinging on to you for more. Another that I LOVED was the characters. This is completely perfect for girls, if there are any who enjoy this topic. The guy characters are HOT. Like, really really cute. Overall, I really enjoyed this hentai.
I found this review Helpful


Anime: Ore no Imouto ga Konnani Kawaii Wake ga Nai.
Both anime are about the love story of a brother and sister relationship.

The difference between the two:
Oreimo 2 is a Harem while Kuro to Kin no Hirakanai Kagi is a Reverse Harem. 
reportRecommended by bloody_Venus55
Anime: Yosuga no Sora: In Solitude, Where We Are Least Alone.
Both deal with the brother - sister type relationship, romance and have smut scenes. Main difference is that Yosuga no Sora is a harem, while Kuro to Kin is reverse harem .  
reportRecommended by Black05Velvet
Anime: Amnesia
Both feature a yandere character and have supernatural elements. Both are reverse harems. 
reportRecommended by mayukachan
Anime: Lovely Day: Boku to Kanojo no Nana Nichikan
Both seem to be the type of hentai that girls would enjoy; Although Lovely Day is a whole lot more smutty and involves more action. 
reportRecommended by Sicilly
Anime: Diabolik Lovers
Both are based off of Otome games. Kuro to Kin is more mature content than Diabolik Lovers, but still good.  
reportRecommended by Breleigh
Anime: Boku wa Imouto ni Koi wo Suru
Both stories are about love between two siblings aka incest, especially with the brother trying to hide his feelings for his sister. 
reportRecommended by Northen_Lights

Recent News

Recent Forum Discussion

Poll: Kuro to Kin no Hirakanai Kagi. Episode 2 Discussion
Frost_Kiss - May 1, 2014
11 replies by Comic_Sans »»
Nov 22, 10:17 AM
Poll: Kuro to Kin no Hirakanai Kagi. Episode 1 Discussion
melina_putri - Mar 1, 2013
24 replies by Mirorin »»
Feb 28, 1:51 AM