# Henjō: Hen na Joshikōsei Amaguri Senko

Henjō: Hen na Joshikōsei Amaguri Senko (変女〜変な女子高生 甘栗千子〜) is a Japanese manga series written and illustrated by Yoshiru Konogi [ja]. It started publishing in Hakusensha's seinen manga magazine Young Animal Island [ja] (later renamed Young Animal Innocent) from September 2012 to March 2014 and started a regular serialization in the publisher's Young Animal magazine in March 2015. The series' chapters have been compiled into 19 tankōbon volumes as of August 2024. A spin-off series, Eroko-san on the Attack, began serialization in Young Animal in July 2019, and another spin-off, Sekirara Hime to Minus Ōji, was published on the Manga Park [ja] website from August 2017 to April 2019.

## Plot

The series follows Senko Amaguri, a high school girl whose family runs a cleaning and repair service. She encounters Ryō Takamura and Kōhei Sugita, two friends looking for a job. She becomes interested in Ryō after following them to the restroom and noticing that his penis has phimosis. The two become employees at the company, where they have to deal ith Senko's strong interest in sex.

## Characters
### Henjō
#### Senko Amaguri (甘栗 千子, Amaguri Senko)

    Voiced by: Rika Kinugawa (drama CD)
    A high school student whose father runs a cleaning and repair service. She has a strong interest in sex and is fond of making sexual jokes. She has an interest in penises and can sense when a man has an erection. She does well in school and in sports and goes to a technical high school. Although she initially acts cold towards Ryō, she later develops feelings for him. She lives with her father as her mother is working overseas.

#### Ryō Takamura (高村 亮, Takamura Ryō)

    Voiced by: Jun Fukushima (drama CD)
    An employee at Handyman Amaguri. He has a strong sexual drive and masturbates daily, although he is still a virgin. His family is aware of his job but is worried that he does not earn enough from it. As time goes on, he develops feelings for Senko, although he remains confused about it.

#### Kōhei Sugita (杉田 航平, Sugita Kōhei)

    Voiced by: Takayuki Kondo (drama CD)
    Ryō's best friend since childhood and his co-worker at Handyman Amaguri. Unlike Ryō, he has sexual experience. He has a large penis, which Ruka nicknamed "Big Mountain". He later starts dating Ruka.

#### Ruka Seto (瀬戸 流河, Seto Ruka)

    Voiced by: Yuiko Tatsumi (drama CD)
    Ryō's younger cousin and a university student. She has had feelings for him since childhood and treats him as an older brother. She later starts working part-time at Handyman Amaguri, gaining an interest in penises because of Senko's influence. She later falls in love with Kōhei and they became a couple.

### Eroko-san on the Attack
#### Eruko Shindō (進藤 絵留子, Shindō Eruko)

    A 27-year-old NEET who is a popular social media personality and influencer. She is nicknamed "Eroko" due to its similarity to her name. She meets Natsuki, whom she calls Hoshi-kun, and desires to lose her virginity to him.

#### Natsuki Hoshi (星 夏樹, Hoshi Natsuki)

    Voiced by: Minoru Shiraishi (drama CD)
    A high school student who goes to the same school as Senko. He confessed to her but was ultimately rejected. Formerly a delinquent, he dyed his hair black at Kōhei's suggestion. He later starts a relationship with Eruko.

### Sekirara Hime to Minus Ōji
#### Riri Momoki (桃木 りり, Momoki Riri)

    Voiced by: Saki Ono (drama CD)
    A high school girl who becomes an apprentice under Senko. Due to Senko's influence, she too becomes interested in sex, leading to her being nicknamed Bokki-chan (勃起ちゃん, lit. "Erection-chan").

## Publication

Written and illustrated by Yoshiru Konogi [ja], Henjō: Hen na Joshikōsei Amaguri Senko was first published for four chapters in Hakusensha's seinen manga magazine Young Animal Island [ja] from September 28, 2012, to September 27, 2013; the magazine was renamed Young Animal Innocent on March 19, 2014, and another chapter of Henjō was published; the magazine was discontinued afterwards. Henjō started a regular serialization in the publisher's Young Animal on March 13, 2015. Its chapters have been compiled into 19 tankōbon volumes as of August 2024. Drama CDs were bundled with the limited edition releases of volumes 6 and 7.
A spin-off series, titled Sekirara Hime to Minus Ōji (セキララ姫とマイナス王子), was serialized for three chapters on the Manga Park [ja] website between August 7, 2017, and April 29, 2019.
A second spin-off series, titled Eroko-san on the Attack (進撃のえろ子さん～変なお姉さんは男子高生と仲良くなりたい～, Shingeki no Eroko-san: Hen na Onee-san wa Danshikōsei to Nakayoku Naritai), began serialization in Young Animal on July 26, 2019; its chapters have been compiled into eight tankōbon volumes as of February 2025. The series is licensed in English by Comikey.

## Reception

It was reported in 2020 that Henjō had sold over a million copies.