into debt and he fell into the underground as a laborer in Squad C. He held handshake sessions underground, played Buddy Red, and shared potato chips given to him by the workers, all in the spirit of service. But when Shiraishi repaid all his debts to Teiai, his release from the underground was confirmed in just a few days, and he said goodbye to the workers. Related Teiai Group persons An old man who is the chairman of the Teiai Group. When it is his or his henchmen's birthday, the prisoners of the underground labor facility are treated to a special menu, and if he is in a good mood he may also present them new equipment, only to immediately confiscate it when his mood is spoiled. One of the highest executives in the Teiai Group and protagonist of his own spin-off series Mr. Tonegawa: Middle Management Blues. He met Ōtsuki in "Tonegawa vs. Hanchō", a crossover collected in volume 5 of Tonegawa, and the two had to fight over a large bowl of katsudon. One of the highest executives in the Teiai Group and a candidate for the No. 2 spot within the organization. He visits the underground labor facility and is shown around the area of Squad E by Miyamoto, but he notices and enjoys the fermented food made by Numakawa. As a result, he tries to take all of it away. Though he is stopped by Numakawa, his intimidating expression causes him to flinch, and he left underground with all the fermented food on hand. One of the blacksuits. He is an unsocial, elderly man whose hobby is cooking. He has been making soba noodles for more than 30 years, so his skills are at the professional level. He also makes New Year's Eve soba that is served on December 31st, which even Ōtsuki admits tastes good. He has been serving as the food service manager since chapter 50, purchasing many relatively inexpensive ingredients on a limited budget, maximizing the use of the parts of the ingredients he purchases and serving the workers a quality menu. To him, it was just a hobby and a way to save money, but as a result, he was revered as the "Meal Messiah" by the workers, who remembered the joy of eating, and during regular personnel shifts, there was an uproar among the workers as to whether he would stay