The Marquis' Eldest Son's Lascivious Story
A Japanese salary man was reincarnated in a different world with swords and magics. He reincarnated into a family of a powerful noble. When he reached twelve years old, on a certain day, he was called by his father. 「 I do not mind whether it is a woman in the town or a maid in our house, learn about women. 」Having gained the permission from his father, he uses his power as a noble to have his way with women.