The Marquis' Eldest Son's Lascivious Story

A Japanese man who dies after a year-end drinking party is reborn into an alien, medieval-Europe-like world as the eldest son of the marquis House Quordenze in the Kingdom of Levios, under the name Wilk. Having secured, against long odds, the position of heir to one of the realm's mightiest houses, he resolves to defend it at any cost and, leaning on his past-life knowledge and a powerful magical gift, prepares in advance for the coming struggle over the succession.

When his father orders the twelve-year-old Wilk to "know a woman," he begins, with the help of his personal servant Tesh, to build a harem of his own — buying the elf slave Eve and drawing in maids and conquered women. At the same time he throws himself into House Quordenze's wars and intrigues against the Jinkaen Empire: he takes part in the fall of the merchant city of Nanbonan and in the negotiations for its surrender, proving himself a worthy son of Quordenze. This is a frankly R18 work in which the young aristocrat's rise and conquests go hand in hand with the building of his harem.