Live Action

Saiki Kusuo no Psi-nan, also known as The Disastrous Life of Saiki K., (斉木楠雄のΨ難 Saiki Kusuo no Sainan) is a film based on the manga series by Asou Shuuichi. The film is majorly based on the first cultural festival arc and includes original story.

Development
The film started out with the director going to his eldest son's room, whom was a fan of fellow Jump series, One Piece, and finding a couple of volumes of the manga. He read them, got interested in the story and thought of adapting it and working with Kento Yamazaki, who eventually ended up cast as Kusuo Saiki.

The film was first announced on June 11, 2015 with the release of Chapter 151. In Chapter 194's color pages, before announcing the anime adaptation, the process of the film was joked but no new news was given. Filming took place in late September 2016 in the Tochigi prefecture, notably in the Former Ashikaga West High School in Ashikaga, Japan.

On March 15, 2017, the official website for the film released the cast, visuals and a teaser. On July 14, 2017, the trailer was released as well as a tease of the theme song, Koi, Hajikemashita.

Cast

 * Yamazaki Kento as Saiki Kusuo
 * Hashimoto Kanna as Teruhashi Kokomi
 * Arai Hirofumi as Nendou Riki
 * Yoshizawa Ryo as Kaidou Shun
 * Kasahara Hideyuki as Hairo Kineshi
 * Kaku Kento as Kuboyasu Aren
 * Muro Tsuyoshi as Chouno Uryoku
 * Satou Jiro as Kanda Pinsuke
 * Tanabe Seiichi as Saiki Kuniharu
 * Uchida Yuki as Saiki Kurumi

Plot
Kusuo Saiki is a 16-year-old high school student, born with several psychic abilities. He dislikes his abilities however he tries to live an ordinary, as possible, life.

It is October 9th and the school day starts. His teacher reminds the class that the school cultural festival will start in a month and informs them if any problems arises, the event will be cancelled next year. Kusuo initially was not bothered by this additional information but realizes the event is the only day he can take a relaxing trip. The teacher then asks Kineshi Hairo to lead the discussion of what their project will be.

Kusuo introduces Kineshi, he is their classroom officer and a passionate individual. Kusuo remembers a case of when they were playing dodgeball, Kineshi grabbed the ball before Kusuo was declared out and was the only one left in the game after Kineshi got injured. With the dicussion going on, someone suggests the class should do an exhibition, something Kusuo agrees. The class ultimately decides to do a rock exhibit, after initial rejection from Kineshi. Kusuo also decides to go to the festival instead of going to his regular trip to stop any problems that can happen.

The class is dismissed and a classmate follows Kusuo to presumably blocking his eyesight but blocks his mouth instead. Kusuo immediately knows who it is, someone who can easily discreetly bypass him, Riki Nendou. Riki is an idiot and the only person Kusuo can not read his thoughts, if he ever has any. Riki asks him if they should look for rocks for the project and if they should get ramen, both requests Kusuo declines. Riki decides to just follow him to whichever place he is walking to. They are then stopped by someone, Shun Kaidou. He tells Kusuo there is something he wants to show him and asks Kusuo to follow him. Kusuo obliges and Riki tags along.

In the school roof, Shun explains he received a strange letter and is certain he received it from Dark Reunion. Kusuo explains Shun is a Chūnibyō and always speaks like this. Riki asks what is in the letter, Shun replies he does not know but he is certain the group will attack the cultural festival. Kusuo asks Shun if he can have a look on the letter and Shun gives it to him. Kusuo uses psychometry to find out who gave Shun the letter.

It is a week before the festival and there are a few students who have found rocks for the project. A group of students go into shock, hearing that a student, Kokomi Teruhashi, will not take part in the beauty contest. Kusuo introduces her as the most popular girl in school. He shares her true thoughts of herself knowing about her beautiful appearance and with those thoughts alone he can not like her. He reminiscences a day in summer vacation, where he was walking with a bag of tea and Kokomi goes up to him to get a reaction. He ignores her, runs away and successfully teleports away. With this event, however, Kokomi started to believe she has feelings for Kusuo and started to be around him. Kokomi goes to talk to him and asks what he will be doing at the festival. Kusuo tells her he will just walk around, but Shun comes in to say Kusuo will help him with his fight with Dark Reunion. She listens to what Shun says before quickly excusing herself, saying she will be looking for a rock, and gets a few "offu" before she is out the door.

It is now the day of the festival. Kusuo eats breakfast with his parents and several misfortune signs befall on them. Kurumi, his mother, tells him to stay safe at the festival today and his parents pray for him before he leaves. Walking to school, Kusuo knows he is being followed by Kokomi. She believes she will finally get Kusuo to say "offu" to her at the festival.

At school, the festival is starting. The class is doing their finishing touches of their rock exhibition. Many share what rock they brought in, and a student asks Aren Kuboyasu about his rock, which is tinted with red. Aren states he found it in the back of the school building. After more sharing, the class rallies up to do a group circle before being dismissed. Kusuo is about to exit the classroom however Aren asks Kusuo to introduce him to the audience. Kusuo introduces him as a transfer student who came into his class 3 months prior. Aren is a former delinquent who is trying to be normal, however Kusuo has seen him nearly act reckless without him knowing. Kusuo finishes the introduction and Aren still assumes Kusuo has no knowledge of his past.

Walking around, Kusuo is trying to avoid Kokomi, who is concern that he has not seen her letter to him asking to go to the haunted house together. She follows behind him, decides to go up to him, only to be stopped by her fan club. They express concern about how she did not enter the beauty contest and tell her go to where it is being held. At the process she sees Kusuo look at her and walking away at a different direction. She sadly goes with them.

Release
The film released on October 21, 2017 in Japan.

Home Media
The film was released in DVD and a Blu-ray/DVD combo pack in Japan on May 2, 2018. A Chinese distributor released a Cantonese dub and Traditional Chinese and English subtitle DVD (Region 3) and Blu-ray (Region A) on June 14, 2018.

Music

 * Main article: Music

Koi, Hajikemashita was used for the film's opening and closing credits. The soundtrack publishes the film score.

Box Office
The film opened at #2 in the Japanese box office, behind an original script movie, Mixed Doubles. The film ended up grossing over 8.6 million (USD) internationally.

Trivia

 * The poster for the film was referenced to make Chapter 251's title page.
 * More chapter titles were used to advertise the movie: Chapter 234, Chapter 236, Chapter 260, Chapter 263, Chapter 264 and Chapter 265.
 * Unlike the manga and several other media, Kusuo does uses his mouth to speak to others.