定年後は異世界で種馬生活

On the way home from my retirement celebration party... I, who was supposed to be sleeping drunk, realized I had become Lutz, a beautiful noble boy in another world. In this world where only women can use magic and men have no choice but to rise in status as "Studs" by making children, I suddenly have to undergo a "Baptism" of impregnating eight older sisters!? Nine months later, when it turns out that all the children born have Cheat-level magical power, my seed and knowledge are even targeted by the Queen of the country—! The Isekai Child-making Harem peerless story, which won 1st place in the "Kakuyomu" monthly overall Ranking, long-awaited for Comicalization!!