Anata ni Tsunagaretai

Ayuna comes to visit her brother at the hotel where he works, but a case of mistaken identity leads her into the royal suite and the arms of Takano, a handsome young businessman. He's Daidou Corporation's ruthless behind-the-scenes manipulator who handles all of its dirty work. Nothing gives him more pleasure than corrupting that which is pure, and... Ayuna is pure.