Teiai Group is one of Japan's largest firms. Yukio Tonegawa, a man with a larger-than-life presence and sharp intellect, works as the right-hand man of Chairman Kazutaka Hyodo. One day, the chairman commands Tonegawa to spearhead "Game of Death," an evil project that employs debtors. He rallies his direct reports and scrambles to form Team Tonegawa, only to encounter a barrage of challenges from the erratic chairman and his disloyal employees, ultimately leading to his demotion.
 
Team Tonegawa is bombarded with an onslaught of wide-ranging problems! "Mr. Tonegawa - Middle Management Blues -" is a spinoff of "Kaiji," the hit manga series that boasts a total circulation of over 20 million printed copies.
 
(Source: Nippon TV) 

Note: Episode 14-15, parts of 18, and parts of 20-23 of this entry adapts the Kaiji spin-off manga Ichinichi Gaishutsuroku Hanchou.