Leopold is the sole heir to the world-dominating Aurelis dynasty, yet he only wants to be an ordinary college student—working at a coffee shop, gaming, and finding simple love. But when a rich brat crushes his handcrafted blue diamond and his first love shames him as a penniless loser, he endures it all—until they demand he kneel and lick their shoes. The crimson crest on his wrist glows as he dials a long-forgotten number: "I have twenty sisters". Instantly, twenty women at the peak of global power—a Mercenary Queen, a Financial Empress, a Hollywood Icon, and the Chief Justice—descend with nuclear submarines and devastating affection. With the gentlest voices, they deliver the deadliest vow: "Whoever dares to wrong our brother, we will send them to hell".
