The Disastrous Life of Saiki K.is a Japanese gag manga series written and illustrated by Shūichi Asō. The series began serialization in Shueisha’s Weekly Shōnen Jump from June 2012. An anime television adaptation by J.C.Staff and Egg Firm aired from July 4, 2016 to December 28, 2018. A live-action film directed by Yuichi Fukuda and starring Kento Yamazaki at Columbia Pictures (Sony Pictures Entertainment Japan) and Asmik Ace was released on October 21, 2017.
A flash anime series based on the manga began release on Jump Live from August 4, 2013, featuring the same voice cast as an earlier Comic adaptation.
An anime television adaptation was announced in the Weekly Shōnen Jump magazine’s 23rd issue of 2016. J.C.Staff and Egg Firm are producing the adaptation, with Hiroaki Sakurai directing, Michiko Yokote handling series composition and Masayuki Onji designing the characters. The series began airing on July 4, 2016 on TV Tokyo, with an episode airing every weekday morning followed by a compilation episode at the end of each week, the series will contain one hundred and twenty episodes in total, along with twenty four compilation episodes on Oha Suta. The opening themes are “Seishun wa Zankoku janai” by Natsuki Hanae, “Sai-Sai-Saikōchō!” by Denpagumi.inc from the thirteenth compiled episode onwards and “Saihakkenden!” by Denpagumi.inc from second season, while the ending theme, also used for the short episodes, is “Psi desu – I Like You” by Denpagumi.inc. From the thirteenth compiled episode onwards, the ending theme is “Kokoro” by Hanae. From second season, the ending theme is “Saihakkenden!” by Denpagumi.inc. The series was simulcast by Funimation, who released an English dub on August 7, 2016.
A 24-episode second season premiered from January to June 2018.
In the last episode of the second season, it was revealed that an anime conclusion special is in production. It premiered on December 28, 2018.
On March 24, 2019, it was announced that Netflix will produce a new anime series, with the staff returning to reprise their roles.
A video game titled Saiki Kusuo no Psi Nan: Shijō Psi Dai no Psi Nan!? was announced in the Weekly Shōnen Jump magazine’s 32nd issue of 2016. The game was developed by Bandai Namco Studios and published by Bandai Namco Entertainment for the Nintendo 3DS handheld game console. It was released on November 10, 2016 in Japan.
Another video game adaptation, is a tower defense game for mobile phones announced at Jump Festa 2018. It was released on April 16, 2018 in Japan.
Kusuo also appears as a playable character in the Jump crossover fighting game J-Stars Victory VS released in 2014. Its European and North American release marks the first release of Saiki Kusuo no Psi-nan material outside Japan.
- Riki Nendo
- A large, muscular student with a Mohawk hairstyle, a scar over his left eye and a cleft chin. Nendo is the only student at PK Academy whose mind Saiki cannot read, simply because he is too much of an idiot. As such, Saiki often fears his overly friendly and carefree nature as he cannot predict his actions. However, Nendo is fond of Saiki and considers him his best buddy. His family members have the same faces as him, with his deceased father with a scar over his right eye instead of Riki’s left, and his mother Midori with scars over both eyes. He has a horrible singing voice.
- Shun Kaido
- A classmate who calls himself “The Jet-Black Wings”, thinking he is secretly living as a rebel in a fantasy world ruled by an evil conspiracy organization called Dark Reunion. Although, while still so much attached to his delusional mind, he slowly builds a normal human relationship with his schoolmates despite his chūnibyō antics popping up. His mother is very strict on his school work. Kaido has low physical stamina and strength as shown in several stories. He also has no sense of direction. Shun has a younger sister who is fairly serious, and a little brother who idolizes him.
- Kineshi Hairo
- Saiki’s class representative is an overly hot-blooded, energetic, passionate student who enjoys sports and is constantly trying to get other people motivated. He has bright red hair and typically wears a nasal strip. According to Saiki, as hard as he is on others, he is even harder on himself. Due to his nature, he is well-trusted by his classmates. A running gag is that whenever he trips his shorts drop and his butt is exposed.
- Kokomi Teruhashi
- A self-proclaimed beautiful girl who is part of Saiki’s class. She acts modest in public as that increases her appeal, but secretly loves the attention that is lavished upon her and all the favors that the guys are willing to do for her. She has the favor of the gods when it comes to events of chance. When Saiki does not treat her like that and even ignores her, she becomes obsessed with making him react or show admiration, like saying “Oh wow” at her. She has a fan club called the Kokomins. In later chapters, it is revealed that her charisma does not affect guys who strongly love someone else (Saiki’s father), those with pure eyes that view everyone equally (Hairo), or those who can see her true nature (Saiki). Her one weakness is with little kids such as Yuuta who exhibit all three of those characteristics. In one of the chapters, it is shown she harbors a list of things that people should never say to her. Despite being wooed by guys like Metori Saiko that fit her ideal financial expectations, she develops feelings of love for Saiki. In the anime, she is typically bathed in a bright yellow glow.
- Chiyo Yumehara
- Saiki’s classmate who has a romanticized perspective on relationships despite having a history of poor choices of boyfriends. She has short brown hair and wears a hairband. After failing to attract Saiki with her romantic comedy manga-like encounters, she dates the sweet-talking Takeru, but breaks up with him after she realizes he uses the same pick-up lines and other annoying habits. Chiyo becomes friends with Kokomi, but suspects they both have crushes on Saiki. Her attention is diverted to Shun Kaido, who saves her from being further belittled by some guys at the beach during the school trip, but who is oblivious that he is even in a relationship with her, She joins the Occult Club because of him, and becomes friends with Arisa where they dabble mostly in girl talk about relationships. After a Valentine’s Day misunderstanding, she and Shun agree to remain friends instead of advancing the relationship.Chiyo is the subject of some side stories involving weight loss and obesity, Asō has mentioned he has been working hard to draw the girls to appeal to the seinen demographic.
- Reita Toritsuka
- A medium and one of two people outside of Saiki’s family to know of Saiki’s abilities. He has the ability to see spirits, but is only interested in using his ability to attract girls (he is often chastised by Saiki as a perv) and to become rich. His guardian ghost is Nendo’s late father. He later lets other spirits possess his body. Toritsuka starts an Occult Club at school. He works as an assistant at the temple. Aiura, Toritsuka, and Saiki constitute the “Psychic Trio” (anime: PK Academy Psychic Kids) at PK Academy, albeit this is a characterization to which Saiki objects.
- Chisato Mera
- A glasses-wearing classmate of Saiki’s who works multiple jobs to make ends meet, including part-time at a cafe that Saiki frequents. A running gag is that she craves free food, and binge eats whenever she can.
- Aren Kuboyasu
- A transfer student with rectangular-framed glasses and purple hair who used to be a delinquent in his former school. He tries to put his past behind him by being calm and collected, yet has a short temper whenever he sees bullying or whenever someone is being rude to him.
- Metori Saiko
- A rich and smug descendant of the top-notch Saiko Conglomerate who later transfers to PK Academy, ends up falling in love with Kokomi, who declines his offer because she still likes Saiki. At first, he resents Saiki but later just kind of hangs around and tries to make people jealous of how rich and great he is.
- Imu Rifuta
- A pretty first-year student with light hair and pigtails who has a strong desire for recognition and takes pride in her appearance to charm the boys, however, she realizes she does not match up to Kokomi. She shows interest in Saiki in order to upstage Kokomi, and Saiki had hoped for the same so that the two girls would eventually leave him alone, but it did not work out. She later turns her affections toward Kokomi when she sees that Kokomi has struggles in her relating to Saiki, and then towards Kokomi’s brother.
- Mikoto Aiura
- is a gyaru with lime-blonde hair, tan skin, and big breasts who transfers to Saiki’s class. She is a fortune teller who can read the future and determine someone’s love compatibility, often accompanied with spontaneous gestures and movements that she makes up to get her in the mood. Saiki realizes her powers are for real after she accurately assesses his classmates. Her goal is to find her true love, and starts becoming interested in Kusuo but dislikes Toritsuka. She can read people’s auras, although Saiki’s aura is so intense that she cannot read his. After Saiki is forced to reveal his powers to her in order to save Chiyo, she becomes interested in Saiki, and agrees to keep his powers a secret. She, Saiki and Toritsuka constitute a “psychic trio” (anime: PK Academy Psychic Kids), much to Saiki’s dismay.
- Touma Akechi
- A transfer student with light brown hair in a bowl cut. He speaks very quickly and can ramble for minutes without stopping. He knows Kusuo from elementary school, and suspects that he is a psychic after he had been bullied multiple times by a student named Takashi and then rescued by Kusuo. He has very keen observation skills, that Kusuo initially thought he too was a psychic. When he is nervous he wets himself. Kusuo eventually tells him his secret in order to keep his identity from widely spreading.