Isekai Saikou no Kizoku, Harem o Fuyasu Hodo Tsuyoku Naru
Alternative title: The Best Noble in Another World: The Bigger My Harem Gets, the Stronger I Become, The Strongest Harem of Nobles, 异世界非凡贵族, 異世界最強貴族，後宮愈多就愈強, 異世界最高の貴族、ハーレムを増やすほど強くなる, 이세계 최고의 귀족, 하렘을 늘릴수록 강해진다
Story Overview
Yuuto is unexpectedly reincarnated into a smartphone game world and becomes the third son of a noble family. In this world, "Skills" are a powerful asset, and Yuuto is born with the rare skill "Noblesse oblige." When he reaches adulthood, Yuuto activates this skill during a ceremony when he embraces a woman. "Noblesse oblige" allows him to copy the skills of the woman he embraces—a unique and coveted ability. As Yuuto embraces more women with powerful skills, he becomes stronger with each acquisition, gradually building a harem of women who fall for him. To make things even more broken, it’s soon discovered that his skill can not only copy but also awaken and evolve other people’s skills. With this overwhelming advantage, Yuuto secures all the skills and women he desires, leading to the rise of his unbeatable cheat harem.