Newlyweds Nana and Shota moved into a newly bought mansion where the residents decided to play an exchange killing game.

An exchange killing game has started right after the mansion administrator fell from the roof top and died.

Fujii is forced to be the next killer as the person he hates, Yamagiwa, has been killed. That’s how the game works.

Shini makes her boss die in an explosion of his own restaurant. In her turn to kill, she’s very scared.

Nana and Shota discover Misato and Goro are killed and surrounded by birthday cake in room 502.

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Kayo in Room 102 was killed and only one of her feet was found in her husband, Toshiaki’s, golf bag.

Shota gathers 3 people and suggests 4 names who are suspected to have killed Ukita. One of the names is unexcepted.

Someone killed Kono for Nana. Is this really an exchange killing game? Shota has found a clue that may reveal the truth.

Shota is locked up in room 402, with a mystery boy. Nana thinks Shota’s missing because he has found the proof.

Sanae is arrested for assaulting Nana. Shota goes to find the new resident in room 304 to help check on Nana’s computer.

Shota enters Kinoshita’s room where lots of data referring to the case are dispersed and finds some suspicious evidence.

Shini lets Kuon to escape from the police as they may be arrested for attacking Shota and suspicion of killing Hakamada.

Shota shouts out 6 names whose finger prints are found on a paper that has Yoko’s name on it to see their reactions.

Shota, Nikaidou and Minami protect Sora and capture Soichi and deliver him to the police. Sora then reunites with Sumika.

Kamiya is brutally killed. His heel cord is cut and his whole body is screwed and smiling like other victims.

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Minami attacks Tamiya and asks if he killed a young girl in Kochi five years ago. Nikaido has been missing for two days.

Nikaido’s AI program shows Kuroshima is most likely the suspect behind all the events but he makes excuses for her.

Shota wakes up and finds that his and Kuroshima’s hands and feet are tied and they are being put on a poisonous drip.