Hooking up with my exes again?!

Minato Haginouchi, heir to the prestigious confectionery company "Haginouchi", is transferred to its headquarters in his third year to begin successor training. But at a company party, his father publicly names him the next president, declaring that any woman who wants to be the president's wife is free to pursue him. Suddenly, in a workplace already teeming with his ex-girlfriends, Minato becomes the unwilling target of their relentless advances!?