Kazumi is an ordinary university student who lost his moster at a young age and lives peacefully with his grandparents. Or he was until twin butlers appeared one day to turn his life upside-down! According to them, Kazumi's father, who he'd been told had died, is the head of a huge business conglomerate, and because of the recent death of his heir, he's asking Kazumi to succeed him... While confused, Kazumi decides to take them up on the offer. He lacks the training necessary to be the next head, however, so the twins are put in charge of his education, and are going to teach him all sorts of things?

from Renta!