You've Got Mail: A Cautionary Tale - Chapter 15 - Guess Where This Jade Rod is Going? (NSFW)

I was always alone, throughout my life. People looked at me with disdain because I was an orphan without parents. Constant abuse followed me everywhere. I lost touch with how to interact with others.With each passing day, I grew more distant from my emotions until I scarcely recognized myself. The warmth of family and friendship felt foreign to me.In the end, I snapped, and I became what I hated the most... something that wasn't human anymore... something that shouldn't have been born...That was until I was reincarnated as Lucas Nightstar, granted a second chance at a happy life with a loving family. Now, I would do anything to protect them, live my life to the fullest, and was willing to destroy anyone who dares stand in my way of my newfound peace. Yet...Little did I know what fate had in store for me.

Monster! Internet writer Mo Fan is traveling through time!

Not dressed as a protagonist, not dressed as a villain, not dressed as an unrivaled powerhouse.

He actually became the ancestor of a miscellaneous fish villain in his book who only lived less than ten chapters, and became the grandfather in his ring.

Looking at his illusory soul body, he thought about the only resurrection material he had set.

Sorry, Lin Yang, I want to be resurrected.

Let my little great-great-grandson take your chance.

Grandpa in your ring, don’t live, let me live!

(Book friend group 839934306, welcome.)

- Description from novelbuddy

In a peculiar twist of fate, Lee Taeok, found himself in an extraordinary predicament. Little did he know that his scathing critique of a popular novel, ridiculing its blatant naivety and overly innocent take on romance, would set in motion a perplexing chain of events, ultimately leading to his unexpected rebirth as the delinquent character, Baek Taeyang, from the very same novel.“You should have taken better care of your girlfriend.”In the world of the Academy Sweet Love Diary novel, Baek Taeyang is destined to “rescue” the heroines.

A man reincarnates in the body of a boy who suffered a tragedy, only to realize that he is in the world of My Hero Academia. What's even stranger is that his quirk seems to have the abilities of Nen and Haki.