

Sex Detective Nana: The Phantom of the Sauna
2021, Japanese. Directed by Shoichi Yokoyama.
Sex Detective is back! Shoichi Yokoyama, who made a brilliant debut with his previous work “Sex Detective Hatenashi”, creates a spin-off starring Nana, the cute sidekick of Hatenashi.
Karin, a sex detective, and Nana, an assistant, have protected the peace of Shimbashi based in a Chinese-style oil beauty salon. In the city, a mysterious incident occurs in which women disappear one after another, but Karin is not so absorbed in having sex with the New York Police Department Kasumi. Nana aims to solve the case with a newcomer China Girl Hachi and pseudo-sex detectives who are a reserve army of sex detectives. As the investigation continues, the shadow of a male office worker who is envious of his female boss, as well as the super-male and female criminal association ADAM, begins to flicker.
- Runtime
- 1h 10m
- Post-credits
- None listed
- Language
- Japanese
- Rated
- Check local
Start now and it ends at ….
Too new to call
Not enough people have rated it yet for a verdict.
Seen it? Give your verdict.
Saved privately on this device.
Where to watch Sex Detective Nana: The Phantom of the Sauna
Sex Detective Nana: The Phantom of the Sauna isn’t streaming on any OTT platform in India yet; it released on 2 July 2021.
No streaming listings yet. Search JustWatch.
Sex Detective Hatenashi Collection
Part of a series
Sex Detective Hatenashi: watch order
Cast & crew
Details
- Released
- 2 July 2021
- Original title
- 激マブ探偵なな 手淫が炸裂する時
- Country
- Japan
- Written by
- Yuta Okuyama
Check ratings elsewhere
News & fan talk
Watch before Sex Detective Nana: The Phantom of the Sauna
In release order. The films it follows, and anything it builds on.
After Sex Detective Nana: The Phantom of the Sauna
What comes next in the series.
If you liked Sex Detective Nana: The Phantom of the Sauna

Ladies First
2026 · 5.9/10
SnoozefestRecommended by TMDB viewers

Dick Figures: The Movie
2013 · 6.1/10
Popcorn FlickRecommended by TMDB viewers

Hard to Die
1990 · 6.0/10
Popcorn FlickRecommended by TMDB viewers

Banana Split
2018 · 6.6/10
Popcorn FlickRecommended by TMDB viewers

One Night at McCool's
2001 · 5.9/10
SnoozefestRecommended by TMDB viewers

Inuyasha the Movie 2: The Castle Beyond the Looking Glass
2002 · 7.7/10
Worth the HypeRecommended by TMDB viewers

The Witcher: Sirens of the Deep
2025 · 6.7/10
Popcorn FlickRecommended by TMDB viewers

Robot Chicken: Star Wars Episode II
2008 · 7.5/10
Worth the HypeRecommended by TMDB viewers

The Irregular at Magic High School: The Girl Who Summons the Stars
2017 · 6.4/10
Popcorn FlickRecommended by TMDB viewers

The Overnight
2015 · 5.9/10
SnoozefestRecommended by TMDB viewers
Sex Detective Nana: The Phantom of the Sauna: quick answers
What should I watch before Sex Detective Nana: The Phantom of the Sauna?
Watch Sex Detective Hatenashi (2018) first.
What comes after Sex Detective Nana: The Phantom of the Sauna?
Next in the series: Sex Detective Hatenashi 2: Double Revolver Love (2023).
Is Sex Detective Nana: The Phantom of the Sauna worth watching?
Sex Detective Nana: The Phantom of the Sauna doesn’t have enough ratings for a verdict yet.
How long is Sex Detective Nana: The Phantom of the Sauna?
Sex Detective Nana: The Phantom of the Sauna runs 70 minutes (1h 10m).
Does Sex Detective Nana: The Phantom of the Sauna have a post-credits scene?
None is listed for Sex Detective Nana: The Phantom of the Sauna. Viewers tag these on TMDB, so a brand-new film may not be tagged yet.
Sex Detective Nana: The Phantom of the Sauna parents guide: is it suitable for kids?
No age rating is listed for Sex Detective Nana: The Phantom of the Sauna yet.
Which OTT platform is Sex Detective Nana: The Phantom of the Sauna on?
Sex Detective Nana: The Phantom of the Sauna isn’t streaming on any OTT platform in India yet; it released on 2 July 2021. (Checked 14 November 2026.)
What movies are like Sex Detective Nana: The Phantom of the Sauna?
If you liked Sex Detective Nana: The Phantom of the Sauna, try Ladies First, Dick Figures: The Movie, Hard to Die.
Who directed Sex Detective Nana: The Phantom of the Sauna?
Sex Detective Nana: The Phantom of the Sauna (2021) was directed by Shoichi Yokoyama and stars Ayumi Kimito, Mayu Mitsui, June Lovejoy.

