The Myriad Worlds, Rising Above Them All

(Multiple heroines, but he doesn’t get involved in outside affairs of his own accord.) His family fell into decline, its businesses were steadily swallowed up, until all that remained was an auction house nobody cared about. Fortunately, he awakened an Auction for a Billionfold Returns System and gained the protection of an incomparable Female Emperor. “Ding! You auctioned a Great Recovery Pill... Billionfold return: you obtained a Nine-Turn Golden Pill...” “Ding! You auctioned an iron sword... Billionfold return: you obtained the Xuanyuan Sword...” “Ding! You auctioned a cat-eared girl... Billionfold return: you obtained...” “???”