Toaru Majutsu no Index - Volume 1, Chapter 3: The Grimoire Peacefully Smiles. "Forget_me_not."

Zhou Heng drank too much wine, and woke up to find that he had time-traveled, and there was a beautiful woman lying beside him. Just when Zhou Heng, a bachelor of ten thousand years, wanted to take charge, he suddenly discovered that this woman who had a relationship with him was called Sadako, and she was the Sadako in Midnight Ring.

Sadako is just Sadako, pretty and human, but the memories that come out one after another make Zhou Heng discover that his name is Takeo Saeki, and he is the husband of Kayako in the Grudge of the Great Evil Spirit.

Later, at work, Zhou Heng discovered that his female colleague had a strange identity. The daughter of his client, Mimiko Mizunuma, had always been very interested in him when she came into contact with him.

- Description from novelbuddy

Xiao Xiang Zi, a cloud spirit in heaven, and Chu Kong mess up the red strings of fate by accident during their brawl.

I reincarnated as Luna, a supporting character who is accused of ruining the heroine and hero’s relationship, and is mu*dered. I’m not interested in someone else’s man, but the heroine’s friends bully me every day. “Why are you trying to get close to someone who’s already taken?” “That’s right, please stop! Why are you doing this?” “Stop doing such terrible things!” So Luna decides to announce it in front of everyone. “I don’t want someone like Fersen even if you beg me to take him so stop bothering me. I’d rather date Anthes Vincent, who’s rumored to be insane.” And soon she meets someone who she never expected to meet…… “I heard you have an interest in me? The truth is, I do too. Is it a coincidence?”

Martial Arts Year 1. Cracks have appeared between Heaven and Earth, and terrifying foreign monsters have begun to invade the earth.

Martial Arts Year 100. Martial arts have begun to flourish, and human martial artists are clashing against the invading foreign monsters.

Martial Arts Year 200. Humanity is declining, foreign monsters are continuously seizing habitual zones.

Martial Arts Year 300. Lu Sheng crossed over. Moreover, he had access to memories from 10,000 years in the future.

“The Body Refining Technique from 10,000 years in the future. After more than 10,000 revisions, it’s a thousand times more effective than the one used now!”

“Martial Art Breathing Method from 10,000 years in the future…”

“Medicinal Pill Recipes from 10,000 years in the future…”

“The Sacred Martial Scriptures from 10,000 years in the future…”

Martial Arts Year 10,000. Humanity has gone extinct.

“The Path of Martial Arts had been honed to its pinnacle, yet there was no one left to inherit it.”

“I, Luo Sheng, am Humanity’s final Ember!”