MTL - Former Cannon Fodder’s Self-help Manual - Chapter 52 My ex said he didn't have a sister-in-law like me

A 30-year-old NEET is reincarnated into the body of an otaku that choked to death on instant noodles. As he comes to grips with his new life, he realizes that this world is subtly different from Earth. The denizens of this world are far better looking, and this new world also possesses futuristic technology as well as mysterious Yin Yang masters!

After reincarnating, he realized that he was endowed with a miraculous game-like system, which enables him to increase his own stats and transcend the limits of the human body. This system even has a game-breaking ability to save and load in real life!

In this new world that’s akin to a 2-D game, he just wants to enjoy life and head for a glorious future… However, he is quickly embroiled in a complex plot. Can he unlock his true potential and utilize his system to break the shackles that confine him and discover the truth about his previous body’s circumstances?

- Description from novelupdates

Upon opening his eyes, there before him was a bridal chamber adorned with red candles and windows.A bride dressed in a phoenix coronet and robes of rank sat upright on the nuptial bed, her face covered by a red bridal veil.Zhao Rong rubbed his sleepy eyes, “Have I become a groom? Oh, and a junior one at that.”Understood.His facial expression brewed for a moment before he twisted his mouth into a smile, “Wait a second...”Huh, something's amiss.The bride is my childhood sweetheart who also harbored a crush on me?Oh, then that's alright.This is very fitting.Zhao Rong stepped forward, happily lifting the red bridal veil, “Hey hey, my lady, where are you running off to?”-------------In the great era of contention, the tide of the times surged forth, and Confucian Scholar Zhao Rong bravely faced it head-on. Not only did he seek to catch up to the footsteps of his childhood sweetheart turned Sword Immortal Lady, but he also wished to witness firsthand the dispute that engulfed more than half of the Cultivation World, the strife among the various schools of thought...—————[Slow-burn], [Non-cliché], [Non-level-up], [Romance plot], [Sweet without the angst]This book is also known as “I Have a Fox Fairy Wife”, “Rebirth: I Deliver Parcels in the Otherworld”, “Zhao Ziyu, The Smirking Scholar” “I Really Don't Want to Be a Kept Man”...

The unparalleled Demon King Ye Xuan, who was able to heal the death or the living alike and holder of the medicine Holy Scripture, was betrayed and killed by his fellow Demon Kings. But he reincarnated into the body of Ye Xuan, the prodigal son of the Ye family and vowed to himself that he would return to his peak and take back everything that belonged to him!

- Description from Novelupdates

A girl named Lily who has a unique body. Because of the uniqueness of her body, people around her looked at her as strange. For this reason, a Yuri Goddess gave her the power so that she could enjoy the true meaning of life and open new windows Quest requested by the Goddess.