The Regressed Demon Lord is Kind - Side Stories: Chapter 26

Transmigrating into the world of Douluo Dalu, I unexpectedly awakened the same Martial Soul, Luo Sanpao, as Yu Xiaogang, and was discovered and taken as a disciple by Liu Erlong.Originally, I thought I would have to live cautiously under Liu Erlong's protection for the rest of my life. But who knew that a system would suddenly appear, binding me to female protagonists and allowing me to grow stronger by earning “conquest points,” evolving my Martial Soul!Now that the system has arrived, Xiao Yu feels there's no need to live cautiously under Liu Erlong's protection anymore. Instead, he can openly rely on conquering a group of female protagonists to dominate Douluo Dalu!Wherever there are female protagonists, there will surely be Xiao Yu's presence!And wherever Xiao Yu's presence is, his Martial Soul, fully evolved into the Radiant Holy Dragon, will surely shine upon the world!Liu Erlong: “Xiaogang, let's keep some distance from now on. I'm afraid Xiao Yu might misunderstand!”Xiao Wu: “Brother, I've fallen for Xiao Yu. Please forget about me!”Ning Rongrong: “Xiao Yu, from now on, my Seven Treasure Glazed Tile Pagoda will be your exclusive money bag!”Zhu Zhuqing: “Xiao Yu, as long as you have the ability, I don't mind you taking all three of us sisters!”Qian Renxue: “For you, giving up the Angel God's position is nothing!”Hu Liena: “Xiao Yu, once I become the Pope, I'll immediately step down for you. I'll focus on being your wife!”

When an era came to an end, various forces set foot in cultivation to compete for immortality. A young boy who spent most of the time sleeping got lucky in the troubled times and became an unparalleled immortal who could cover the sky with a snap of fingers. Was he going to live forever?

- Description from Novelupdates

Mysterious occurrences loom; the entire world dramatically changes.The fate of individuals and nations becomes bound to AnalogHorror (rule kaidan), and once the chosen of destiny fail, it means countless people in their corresponding nation will be slaughtered by the strange phenomena.The entire world falls into unrest, panic, and despair.Until an absolutely unexpected individual joins the AnalogHorror game.Xiao Yiwang glanced at the weird world before him and then at the examination admission ticket in his hand.“Have middle school entrance exams always been this complicated? Well, it does prove my intelligence!”“I am retarded, but selected to join the analoghorror game?!”

It has been more than ten years since he was transported to another world. The protagonist Deris Fahrenheit, who has became a magician with special circumstances, was freely enjoying his life in this world. However, a girl appeared before him and asked him to make her his disciple. That girl seems to be a transported person――

It’s a story of him who becomes the girl’s teacher and trains her to achieve her revenge (?) in otherworld.