Who would have ever imagined that the most feared gangster of his era now spends his days as a modest househusband? The legendary "Immortal Dragon" Tatsu, best known for his numerous skirmishes against rival gangs, has abruptly vanished, seemingly abandoning the yakuza lifestyle. Unbeknownst to most, however, Tatsu is currently living in an apartment with his wife, doing his best to lead a peaceful life. Donning his trusty apron, Tatsu is now striving to become an efficient homemaker. Because of this, he has mastered the necessary skills—whether it is cooking the most delicious dishes, securing the best deals at supermarkets, or handling everything in between—much to the surprise of both his former subordinates and enemies alike. Despite having a quite controversial past, Tatsu's new way of life will only become more eccentric from here on out!