The saintess of the demon race is in distress, unexpectedly possessing the body of a righteous sect's senior disciple. This senior disciple, nicknamed the "Righteous Gentleman," is known for his benevolence and generosity. He possesses pure character, humility, and courtesy. He respects his teachers and loves his fellow disciples. He is truly a model of righteousness. In this world, only a witch knows the true identity of this virtuous man. "I will no longer be a member of the demon race. Let him take my place..."

Zhang Yuan is a famous fool in Xiawan Village, but he is very popular among the women in the village. In particular, Li Qiuju, a beautiful young woman who was famous in the village, always came to see Zhang Yuan in the middle of the night. Li Qiuju: "Brother Yuan, you have helped me so much, why don't I repay you with my life?"

"Wife, this medicine doesn't taste right. Why don't you try it?"... Death and time travel? A life simulation? Wu Zhi, a hard-working office worker, had just paid off his loans and saved a million-dollar fortune when he was struck down by a stroke of bad luck. When he opened his eyes again, he had transmigrated into the body of Wu Dalang, the first cuckold in history! Even more despairing, he was given the added burden of being fed medicine by Pan Jinlian—a truly hellish start! Was death inevitable? Fortunately, the [Life Simulator] was activated, granting him the ability to glimpse the future and change his fate in reincarnation! Each simulation of the future accurately predicted his death. Each restart of the cycle brought the crisis ever closer. Pan Jinlian's bowl, Wang Po's mouth, Ximen Qing's influence, the rogue's fists... all were death warrants.

I will always love Eriri Sawamura, Megumi Kato, and Utaha Kasumigaoka. *Slap*— Is that what you call liking? You're just lusting after their bodies! You... *Slap*—(slaps back) So what if I lust after their bodies?! You have to live your life clearly, know what you want to do, and be honest! (Crossover anime worlds, tentatively: How to Raise a Boring Girlfriend, My Youth Romantic Comedy Is Wrong As Expected, You're the Only One Who Likes Me, School Days, Sword Art Online, Black Bullet, Ultraman Tiga, Dragon Ball... and some other strange and wonderful things.)