Synopsis

The story follows high school student Katagiri Yuichi, who values friendship over money, as he and his friends get caught up in a mysterious game that tests their bonds. When 2 million yen collected from the entire class for a school trip is stolen by someone unknown, Katagiri Yuichi receives a letter from vice class representative Sawaragi Shiho, who claims to feel responsible for the theft incident. However, when he arrives at the meeting place, he finds Shiho (who says she was also summoned by Yuichi) along with friends Mikasa Tenji, Shibe Makoto, and Kokorogi Yutori. After being attacked by unknown assailants, the five are confined to a room where they learn that one of them has accumulated a 20 million yen debt and has enrolled their friends in the “Tomodachi Game” to help repay it. Successfully clearing the game will eliminate the debt, but failure means each person must bear 4 million yen. Although the key to clearing these friendship-testing games is to never doubt your friends, the games are specifically designed to make them suspicious of each other.