Ai wa Kagi no Kazu dake... Fuuzoku Mansion

Love is the Number of Keys

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Alternative Titles

English: Love is the Number of Keys
Synonyms: Ai ha Kagi no Kazu dake... Fuuzoku Mansion, Love is the Number of Keys
Japanese: 愛は鍵の数だけ… 風俗マンション


Type: OVA
Episodes: 1
Status: Finished Airing
Aired: May 25, 2002
Licensors: None found, add some
Studios: None found, add some
Source: Original
Genres: HentaiHentai
Duration: 28 min.
Rating: Rx - Hentai


Score: 6.221 (scored by 15651,565 users)
1 indicates a weighted score.
Ranked: N/A2
2 based on the top anime page. Please note that 'Not yet aired' and 'R18+' titles are excluded.
Popularity: #7568
Members: 3,844
Favorites: 14

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Jyun is on his own for the first time as his father has gone overseas for a new job. He stays behind because of schooling and moves into an appartment complex as assistant manager only to discover the place is a sex service appartment.


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Mar 11, 2011
osukebei (All reviews)
It seems hentai these days are fill with rape, coerced sex, black mail, NTR, and gang bangs. What ever happened to seduction and consensual sex? "Love is the Number of Keys" is a hentai that delivers just that. Seductive consensual sex. Sure, the animation is a bit dated, but it does a good job at delivering.

Jyun, the lucky protagonist, didn't know what he got into when he signed up for a job as an assistant manager at an apartment complex. He soon found himself working under a sexy manager that's in charge of ... well, part-time escorts, shall we say. It's all about seduction. I read more
Jul 21, 2020
YoruichisTiddies (All reviews)
I don't normally say no homo to hentai but there was one super sus scene which made this hentai a bit bad. But besides that, this episode was amazing. First off the music. The osts played in this all resemble that of the classy jazzy typa theme. Very nice slow n ez relaxed music, the smooth kind. N I noticed sometimes the backgrounds gave off sailor moon vibes. In a way it was similar, like the way the buildings were drawn, the colour of sky, u get me? In my opinion if they just stuck w Sumire (good wife material) from the beginning read more
Mar 26, 2017
AnimeFan48 (All reviews)
so this review will probably be short cause its only one episode so yeah lol

Story: so there is kinda a story in this in a sense that Jun stayed in japan while is father went overseas so he found a apartment and than got roped into becoming assistant manager of the place also not know that the place is a sex service apartment complex

Art: art is pretty good for it coming out in 2002

Sound: again sound is decent but its not the greatest either

Character: Jun is the main male of the hentai and is the shy and also nice type of person when it comes read more

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Recent Forum Discussion

Poll: Love is the Number of Keys Episode 1 Discussion
Rasco - Aug 5, 2012
2 replies by removed-user »»
Apr 29, 2016 3:44 AM