A Japanese salary man was reincarnated in a different world with swords and magic. He reincarnated into the family of a powerful noble. One day when he became twelve years old, he was suddenly summoned 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 of his father, he uses his power as a noble to have his way with women.
The Marquis’ Eldest Son’s Lascivious Story It is also Known as: 侯爵嫡男好色物語 ～異世界ハーレム英雄戦記～, The Marquis' Eldest Son's Lascivious Story
Genres: Adventure , Drama , Fantasy , Harem , Ecchi , Action , Elf , Isekai , Slavery
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Top Manga Like The Marquis’ Eldest Son’s Lascivious Story (Koushaku Chakunan Koushoku Monogatari - Isekai Harem Eiyuu Senki) [2026 List]
1. Oukoku e Tsuzuku Michi
This is the story of a young slave gladiator in an underground arena. He doesn’t know about his past or how he got to where he is, only that his name is Aegir, and that he is strong.
One day he kills the boss and escapes the arena, joining a band of mercenaries as a new recruit. During one mission, they encounter the vampire, Lucy, who slaughters the band with her inhuman strength. After learning that Aegir only knows how to kill, Lucy lets him stay at her house, educating and taking care of him.
Two years pass, and on the day of Aegir’s departure, they both exchange a promise that if Aegir becomes a king and owns the land of Erg forest, he can come and take her as his woman. Making this his life goal, Aegir set out on a journey to become a hero, a king, and found his own kingdom.
Road to Kingdom is currently publishing and has Chapters. It is also Known as: 王国へ続く道 奴隷剣士の成り上がり英雄譚, The Road That Leads to Kingdom, Road to the Kingdom Slave Swordsman the Rise of Heroes - Harem Life, Oukoku e Tsuzuku Michi dorei Kenshi no Nariagari Eiyūtan (Haaremu Raifu), Oukoku e Tsuzuku Michi Dorei Kenshi no Nariagari Harem Life, 王国へ続く道 奴隷剣士の成り上がり英雄譚（ハーレムライフ）, Road to the Kingdom Slave Swordsman the Rise of Heroes, Дорога в королевство, 通往王国之路 奴隶剑士的崛起英雄谭
