Tou-san na, Death Game Un'ei de Kutte iru n da

Year 20xx, a time when the "Death Game" has become important. A large number of people participate in them in search of great prizes. FATHER, the greatest administrator of Death Game, is the place where Kurosaki Eiji works as general manager of that division. This manga follows the life in the working world of Kurosaki Eiji and the problems he must endure in his job while hiding his work from his family. Source: MU