Unexpectedly Naughty Fukami – Anime Review & Episode Guide

Unexpectedly Naughty Fukami is a Japanese 18+ BL anime series about two office colleagues who end up sleeping together. The protagonist wants to be friends with benefits, but his coworker rejects him.

Unexpectedly Naughty Fukami is a Japanese 18+ BL anime series about two office coworkers who become casual lovers. During a business trip, the main character accidentally exposes his gay hookup app. To his surprise, his nerdy colleague admits he's also into men. That night, they end up sleeping together. The cocky protagonist wants to be friends with benefits and continue their physical relationship. He's shocked when his partner rejects him.

We're used to 18+ BL anime being terrible, but Unexpectedly Naughty Fukami is a surprisingly decent series. I enjoyed the simple premise, which is easy to follow. I laughed at the quirky characters and their entertaining scenes together. There's also a lot of smut packed into each episode, even if the art quality can be inconsistent. However, the story suffers from its short length. There isn't enough time to explore the relationship in depth.

Unexpectedly Naughty Fukami Summary

Title:

やたらやらしい深見くん

Series Info:

Japan (2025)

Length:

1 hour

Total Episodes:

8 episodes

Genre:

18+ office romance

About:

Unexpectedly Naughty Fukami is a spicy & romantic BL anime.

Plot

Kaji and Fukami become a couple.

Kaji is a popular employee at his company. He's skilled at his job and gets along with his colleagues, earning their admiration. The women fawn over Kaji and see him as the perfect catch. He accepts their compliments with a suave smile. Secretly, Kaji has a mean streak and a huge ego. In his mind, he looks down on everyone. Kaji believes he's better than them.

Kaji is a single gay man who stays closeted at work. He hides his sexuality, not wanting it to affect his image. When alone, he scrolls through gay hookup apps. Kaji is shallow and rates men based on their looks, assigning them numbers in his head. A bearded man gets 30 points. Someone with a bad body? Ew, only 20 points. Kaji doesn't take personality into account, judging them only on appearances.

During a business trip, Kaji is paired with Fukami, a coworker from the IT department. The event goes smoothly thanks to Kaji's sales skills and Fukami's technical support. Kaji tries to start small talk, but Fukami stays quiet and distant. An annoyed Kaji mocks his nerdy colleague in his thoughts. He judges Fukami's messy hair, glasses, and plain clothes, rating him a "total zero" for his unattractive appearance.

That night, Kaji and Fukami arrive at a crowded hotel and have to share a room. Kaji relaxes by scrolling through his gay hookup app. When he accidentally drops his phone, Fukami catches a glimpse of the explicit content. Embarrassed, Kaji braces for judgment, but Fukami admits he's also into men. Relieved, Kaji jokes about hooking up, and Fukami unexpectedly agrees. They spend a passionate night together. During the encounter, Kaji realizes Fukami is surprisingly sensual and more attractive than he first thought.

The next day, Kaji feels confident. He wants to keep hooking up with Fukami and suggests they become friends with benefits. Fukami refuses, immediately turning him down. Back at work, he avoids Kaji completely. As Kaji's ego takes a huge hit, he tries to find other men more attractive than the "total 0." Still, he can't stop thinking about Fukami. Kaji desperately wants to sleep with him again.

Unexpectedly Naughty Fukami Trailer

Unexpectedly Naughty Fukami Cast

Characters

Kaji

Chasuke (茶介)

Fukami is voiced by Japanese actor Chasuke (茶介).

Kaji is a charming employee who thrives on attention at work. Everyone sees him as friendly and capable. Behind his smile is a sharp ego and a judgmental attitude. He hides his sexuality, fearing it might affect his perfect image. In private, Kaji cruises gay hookup apps and rates men based purely on looks. He calls Fukami a "total zero" due to his unattractiveness.

Chasuke

Chasuke (茶介) is a Japanese voice actor.

Chasuke (茶介) is a Japanese voice actor. Their BL portfolio includes voicing the lead role of the 2025 anime series, Unexpectedly Naughty Fukami.

Fukami

Marshmallow Yakitaro (マシュマロ焼太郎)

Fukami is voiced by Japanese actor Marshmallow Yakitaro (マシュマロ焼太郎).

Fukami is a quiet, introverted IT specialist who keeps to himself. He barely interacts with other colleagues. Fukami wears glasses, has unstyled hair, and dresses in plain clothes. Kaji thinks he's unattractive and secretly rates him a "total 0." Fukami and Kaji end up spending a passionate night together. While Fukami wants to continue hooking up, Kaji bruises his coworker's ego by rejecting him.

Marshmallow Yakitaro

Marshmallow Yakitaro (マシュマロ焼太郎) is a Japanese voice actor.

Marshmallow Yakitaro (マシュマロ焼太郎) is a Japanese voice actor. Their projects include voicing the lead role of the 2025 anime series, Unexpectedly Naughty Fukami.

Supporting Cast

Fukami's sister is voiced by a Japanese actress.

Fukami's sister

Fukami's nephew is voiced by a Japanese actor.

Fukami's nephew

Kaji's ex is voiced by a Japanese actor.

Kaji's ex

Kaji's coworker is voiced by a Japanese actress.

Kaji's coworker

Unexpectedly Naughty Fukami Review

Review

Drama Review Score: 7.1

C+
Kaji and Fukami have sex.

Unexpectedly Naughty Fukami is a surprisingly enjoyable anime. This series comes from the same BL studio that makes 18+ smut, infamous for trashy projects like The One With The Perverted Titan and The One With The Freaky Furries. Every year, I write a harsh review of their latest gay erotica and try my best not to roll my eyes. Given the studio's awful track record, I never expected something as good as Unexpectedly Naughty Fukami. It's easily the best work I've seen from them, even if there are still a few issues.

The story's simplicity is one of its strengths. Two coworkers become fuck buddies and develop feelings for each other. That's it. That's the whole series. This premise suits a short 40-minute anime because it's easy for the audience to understand. It sets up a compelling emotional arc as a casual fling turns into an ambiguous romance. Also, it gives Unexpectedly Naughty Fukami a legitimate reason to include many erotic scenes. The smut is actually part of the plot development! Best of all, the sex is consensual. Both characters want to hook up, avoiding the usual toxic tropes and predatory behaviour in 18+ BL.

The two protagonists have quirky personalities. Fukami is nerdy and antisocial, while Kaji can be extremely shallow and arrogant. This unlikely couple has hilarious interactions because they thrive on the opposites-attract dynamic. I laugh when Fukami bruises Kaji's ego with a simple gesture. Or I giggle at Kaji annoying Fukami enough to push him out of his introverted shell. Beyond their funny quirks, these characters have hidden layers. When Fukami discusses his insecurities or Kaji has a rare moment of self-reflection, the anime surprises me with its sincerity.

Contrary to the anime's title, the naughty content is expected. This studio is famous for packing as much smut as possible into every series. One of my past complaints is the formulaic sex scenes, but they've gotten better at diversifying the scenarios. Each episode contains a raunchy 18+ moment with ejaculation, penetration, nipple licking, or Kaji's fondness for sticking his fingers up Fukami's ass. Visually, the art quality is inconsistent. They put more effort into the explicit material and care less about the other parts. At times, Kaji's appearance may look a little off.

This anime has a better plot than some BL dramas out there. I enjoy the premise, the couple, and their romance. However, the short length limits all the potential. Each episode is five minutes long, and a portion of the time is dedicated to the smut. It leaves little room for meaningful story development. Complex character arcs are simplified, while interesting scenes get reduced into brief snippets. It's disappointing because Unexpectedly Naughty Fukami deserves better than a rushed 40-minute series. My dream is that it gets a longer remake to tell its love story properly.

A steamy shower scene is the highlight of the finale. I appreciate the smut, even though I wish the conclusion had time to explore the relationship on a deeper level. Give me hot shower sex, but also give me substance. I blame the studio for making the story too short. Why didn't it invest more resources into such a promising project? Take the budget from your other crappy series and put it into this one! Despite its limitations, I still find Unexpectedly Naughty Fukami delightful. Most 18+ anime is garbage, but this fun, sexy romance has been a pleasant surprise.

Summary

Simple story

Unexpectedly Naughty Fukami is about two office workers who become friends with benefits. It's easy to follow the story because of its simple premise, though I wish the plot had more depth.

Playful romance

The 18+ anime crams as much smut as possible into every episode. Besides the steamy sex scenes, Kaji and Fukami also have funny exchanges together. They make a surprisingly entertaining couple.

Smutty visuals

The visuals look the best during the sex scenes. It's clear they put the most effort into the physical encounters. Other moments have less consistent visual quality, and Kaji's appearance seems off at times.

Happy ending

Unexpectedly Naughty Fukami has a happy ending. A steamy shower scene is the highlight of the finale. While the smut is hot, I wish the finale had more time to explore the relationship on a deeper level.

Erotic style

In the past, I complained that the sex scenes looked formulaic, like they're copying and pasting from a template. In this series, they're getting better at diversifying the scenarios and offering more variety.

71%

Unexpectedly Naughty Fukami is a surprisingly decent series, given the low standards for 18+ BL anime. I enjoyed the funny characters and their sexy relationship, even if I wish the story were longer.

Unexpectedly Naughty Fukami Episodes

Episode Guide

Fukami and Kaji share a kiss.

Unexpectedly Naughty Fukami has a total of 8 episodes. Each episode is around 5 minutes long. The uncensored version includes sex scenes. This is a short BL anime, and you can finish the entire series in under 1 hour. Unexpectedly Naughty Fukami started on March 14, 2025 and finished on June 9, 2025. Akane Ozora (大空茜音) is the director.

Unexpectedly Naughty Fukami is adapted from a Japanese manga. The original story is by Ayaka Matsumo (松本あやか).

Episode 1
Episode 2
Episode 3
Episode 4
Episode 5
Episode 6
Episode 7
Episode 8

Unexpectedly Naughty Fukami Information

Creator

Ayaka Matsumo (松本あやか) is a Japanese artist.

Ayaka Matsumo (松本あやか) is a Japanese artist whose works have been made into BL series. Mr. Mitsuya's Planned Feeding was adapted as a live-action drama in 2024. Unexpectedly Naughty Fukami was made into an anime in 2025.

studio HōKIBOSHI

studio HōKIBOSHI is a Japanese anime studio that made Titan's Bride (2020) and Reincarnated Into Demon King Evelogia's World.

studio HōKIBOSHI is a Japanese anime studio that made Titan's Bride (2020), Reincarnated Into Demon King Evelogia's World (2021), Mori no Kuma-san (2022), The Perfect Prince Loves Me, the Side Character?! (2024), and Unexpected Naughty Fukami (2025). In addition to these 18+ yaoi series, the studio also produces other adult anime series. The studio also operates under the AnimeFesta brand.

Leave a Reply

Your email address will not be published. Required fields are marked *

BL Watcher - Best BL Dramas, Movies & Anime Reviews