第1 章 产屋敷建仁

Akizayashiki Kenjin

[Muzan's younger brother + salted fish + no cannibalism + no harem]
He traveled through time and became the Demon King in Demon Slayer: Kimetsu no Yaiba, and the younger brother of Muzan, the comrade-in-arms of Kibutsuji.
He became the second ghost king in the world and found that he didn't need to eat humans, he could become stronger by sucking blood.
Kenjin has no ambitions to begin with, he just wants to get through the plot, marry Kanae Kocho, and absorb some of Nezuko's blood to overcome the sun.
Kenjin, who knew Muzan's character well, was prepared to keep his distance from the despicable Wuzan, but he didn't expect that Wuzan was really despicable.
Muzan: Stupid Ododou, let me devour you, so that I can become the only strongest ghost king.
Kennin: "..."

【无惨弟弟+咸鱼+不吃人+不开后宫】
穿越成鬼灭之刃里鬼王，鬼舞辻·无惨的同袍亲弟弟。
变成世间第二只鬼王，发现自己也不用吃人，只需吸血就能变强。
建仁本就胸无大志，只想混到剧情，娶了蝴蝶香奈惠，吸点弥豆子的血克服阳光。
熟知无惨性格的建仁，就准备和屑无惨井水不犯河水，没想到屑无惨是真的屑。
无惨：愚蠢的欧豆豆，让我吞噬你吧，这样我就能成为唯一的最强鬼王。
建仁：“……”