Mafia Boss Genichirou Tokada Inukai, Asia's largest underworld organisation leader, completes 108 years of natural life.
His inheritance going to his granddaughter totals to 5000 trillion ¥ (5 quadrillion yen or 46,560,140,000,000.00 USD),
approximately 360 times the assets of the founder, roughly 17 times the national budget of Japan.
Yet the desire of this unscrupulous daughter who has a non-standard financial power is to… make friends ?

Alt synopsis:
What do people want or do if they receive 5000 trillion yen all of a sudden? A youth comedy in the dark society.
Chifuyu Inukai solves all things with the power of money, starting a comedy of unprecedented scale (of spending) in all history of manga.