Yagami-kun’s Family Affairs (Japanese: 八神くんの家庭の事情, Hepburn: Yagami-kun no Katei no Jijō) is a Japanese manga series by Kei Kusunoki which was originally serialized in Shogakukan‘s Shōnen Sunday Zōkan from March 1986 to May 1990. The manga was later adapted into a three–episode original video animation (OVA) in 1990, and an eleven–episode television drama.

The story follows Yūji Yagami, a high school student with a problem: his mother, Nomi, looks very young and Yūji has a crush on her. To complicate matters, his high school homeroom teacher is also infatuated with her due to how young she looks. Nomi is oblivious to all of this and is head over heels in love with her husband, Yōji, and frequently displays this affection very publicly, which causes more embarrassment for Yūji.

Yūji’s high school friends constantly tease him about his “mother complex“. When Valentine’s Day comes around, though, Yūji receives a box of handmade chocolates. The name on card can be read multiple ways, the most common way being Masayuki Ikari (五十里 真幸, Ikari Masayuki), a male name, so his friends tease him throughout the day until it is time to meet the person who sent the chocolates at the front gate after school.

The girl who sent the chocolates (the name is actually read “Mayuki”) starts meeting him after school so they can walk home together, and they eventually become an item. The remainder of the story follows Yūji and Mayuki as their love grows and as Yūji works to resolve his “mother complex” issues.

Yūji Yagami (八神 裕司, Yagami Yūji)

Voiced by: Kazuki Yao

Yūji has a “mother complex” because his mother appears to be very young and he finds her attractive. This is used throughout the series for comedic effect. He feels guilty about how he feels about his mother.

Nomi Yagami (八神 野美, Yagami Nomi)

Voiced by: Chieko Honda

Yūji’s mother. She is a bit naive and has a tendency to dote on her only son.

Mayuki Ikari (五十里 真幸, Ikari Mayuki)

Voiced by: Maria Kawamura

Yūji’s girlfriend. Due to the characters used to write her given name (which can be read “Masayuki”, a male name), the love note she sent to announce her feelings was interpreted as being from a boy, much to Yūji’s chagrin and his friends’ amusement. She is shy and indecisive, so it took her a long time to work up the courage to let Yūji know about her feelings. However, she has a temper and frequently gets upset at Yūji for his indecisiveness. She drives a bullet bike.

Akira Yokkaichi (四日市 明, Yokkaichi Akira)

Voiced by: Akira Kamiya

Yūji’s homeroom teacher. He fell in love with Nomi at first sight, and is constantly flirting with her. Nomi is the only one who does not seem to notice his flirting, though.

Yōji Yagami (八神 陽司, Yagami Yōji)

Voiced by: Norio Wakamoto

Yūji’s father, a salaryman. He has a very close, romantic relationship with Nomi, which often embarrasses Yūji.

Mitsuko Nanase (七瀬 密子, Nanase Mitsuko)

Voiced by: Hiromi Tsuru

A 23-year-old office lady. She secretly wishes to have an affair with her boss, Yōji, and is very jealous. She is constantly flirting with him.

Shigeki Yaoi (八百井 刺激, Yaoi Shigeki)

Voiced by: Nozomu Sasaki

Nomi’s student. He acts as the comic foil to Nomi’s unwitting naive mistakes.

Kazuki Ichigaya (一ヶ谷一樹, Ichigaya Kazuki)

Voiced by: Mitsuo Iwata

One of Yūji’s friend’s from his homeroom at high school.

Futamura (二村)

Voiced by: Ryō Horikawa

One of Yūji’s friend’s from his homeroom at high school.

Miyake (三宅)

Voiced by: Hiroyuki Satō

One of Yūji’s friend’s from his homeroom at high school.

Yagami-kun’s Family Affairs, written and illustrated by Kei Kusunoki, was serialized in Shogakukan‘s Shōnen Sunday Zōkan from the March 1986 to the May 1990 issues. Shogakukan collected its chapters in seven tankōbon volumes, released from August 18, 1987, to August 18, 1990.

A three–episode original video animation (OVA) adaptation by Kitty Film Mitaka Studio was released in Japan on May 25, 1990.

An eleven–episode Japanese television drama was broadcast on TV Asahi from October 11, 1994, to February 2, 1995.

Yagami-kun’s Family Affairs
Manga volume 1 cover
八神くんの家庭の事情 (Yagami-kun no Katei no Jijō)
Genre	Romantic comedy
Manga
Written by	Kei Kusunoki
Published by	Shogakukan
Imprint	Shōnen Sunday Comics
Magazine	Shōnen Sunday Zōkan
Original run	March 1986 – May 1990
Volumes	7
Original video animation
Directed by	Shin’ya Sadamitsu
Produced by	Atsushi Yabe Mitsuhisa Ishikawa
Written by	Akinori Endō
Music by	Ichiro Nitta Ryo Yonemitsu Takashi Kudo
Studio	Kitty Film Mitaka Studio
Released	May 25, 1990
Runtime	30 minutes
Episodes	3
Television drama
Directed by	Makoto Tsuji Toshio Ōi Yoshio Gōda
Written by	Akira Momoi Shōji Imai Masahiro Kobayashi Masahiro Kobayashi
Studio	MIT Stonehills / ABC
Original network	TV Asahi
Original run	October 11, 1994 – February 2, 1995
Episodes	11