is a Japanese manga series written by Tensei Hagiwara and illustrated by Tomohiro Hashimoto and Tomoki Miyoshi. It is a spin-off of the main series Kaiji by Nobuyuki Fukumoto. It was serialized in Kodansha's Monthly Young Magazine from June 2015 to January 2018, and later moved to Comic Days manga app in March 2018 and finished in June 2020. Its chapters were collected in ten tankōbon volumes. The series comically depicts the struggles and conflicts of Tonegawa, a middle manager who is an executive of the Teiai Group and leads a large number of blacksuits, but is most concerned about the mood of the tyrannical Chairman Hyōdō.
An anime television series adaptation by Madhouse aired from July to December 2018 on Nippon TV's AnichU programming block. Sentai Filmworks have licensed the anime and an English dub began streaming on Hidive in August 2018. The show is also available for viewing on Crunchyroll.
As of November 2018, the manga had over 2.9 million copies in circulation.
Story
The story follows Yukio Tonegawa, the right-hand man of the company's chairman, Kazutaka Hyōdō, and the top executive of the Teiai Group, one of Japan's largest consumer finance conglomerates. In order to distract Chairman Hyōdō from boredom, Tonegawa gathers eleven of his blacksuit subordinates and forms Team Tonegawa in order to plan a so-called "game of death" that will keep Hyōdō pleased. Troubled by the Chairman's interference, the threat of loss of trust from Tonegawa's subordinates, illness, the members' blunders, and unplanned accidents, the team struggles in various ways to execute the project.
Characters
Team Tonegawa
One of the top executives of the Teiai Group and is a hard-working man with a good command of the human mind and high level of trust from his subordinates. However, he is not very good at reading Hyōdō's feelings, and he is often reprimanded for provoking his displeasure. Although he serves almost year-round, he is not rewarded much. In the past, he worked at the south Hateruma branch of Teiai, and he still has scars from being bitten by a sea snake there. His favorite foods are yakiniku and yakiniku bento. He is last seen in the final chapter which takes place several years after he quit Teiai, staring at a setting sun on a beach in an unspecified location.
Initial Members
One of the initial black suits in the project team, 30 years old. He has worked directly under the Chairman and is a leader among the blacksuit members. At first he was dissatisfied with Tonegawa's arrogant work ethic, but after being touched by his hard work and honest personality, he changed his mind, and later became a loyal subordinate who could be called a confidant of Tonegawa. He is also in charge of taking care of Masayan. In the final chapter, he becomes one of the senior members of Teiai and instructs his blacksuit subordinates.
One of the initial black suits, 23 years old. Before Nishiguchi joined, he was the youngest member of the team. He is remarkably capable of contributing and being flexible, such as coming up with ideas for Restricted Rock-Paper-Scissors, and stands out among the team for his creativity. On the other hand, he has a free-spirited side and behaves with abandon, which is typical of today's youth. He is a skilled mahjong player in Team Tonegawa and won the Tonegawa mahjong tournament. Being the only one of the early members to have a very unusual last name, he is often called "Saemon" by those around him. In the final chapter, he resigns from Teiai and starts running an event management. He has an uxorilocal marriage with Saeko, changing his last name to Nishiguchi.
One of the initial black suits, 30 years old. He was the first member on the team to come down with the flu. In the final chapter, he resigns from Teiai and gets a new job at a major bank.
One of the initial black suits, 35 years old. When he got married in chapter 25, it was revealed that his birthplace was Zambia, in southern Africa, and that he had aspired to be a comedian in the past. In the final chapter, while still working as one of the blacksuits, he reunites with his former comedy duo partner. They lose in the second round of the M-1 Grand Prix, but he is still busy making up ideas.