MTL - Rivals of Rebirth - Chapter 65 deal with

Time travelling from the majestic era after the Recuperation of Reiki, he became Kimura Kazuki, a 16-year-old high school student in Japan, one year before the Reiki Recuperation.

Tentatively, he set out to hone himself to the bone, burning candles at both ends to stockpile resources in preparation for the imminent Recuperation of Reiki. His goal was to be many steps ahead of all humanity when the time comes.

However, it seemed like fate had decided to play a cruel trick on him.

One year later, the Recuperation of Reiki… did not happen as expected.

Traveling to an overhead urban world where martial arts and immortal arts coexist, the only thing Lin Shen can rely on is the avatar Golden Finger.

Cultivate in avatar, the main body becomes stronger.

Clone [Pure Yang Body]: Yang attribute skills training speed +300%, Blazing Sun Palm, Melting Soldiers Hand, Qianyang Sword Art… Any Yang attribute skills can be easily mastered, and a thousand miles a day!

Clone [Natural Dao Body]: Practice speed +500%, all martial arts skills can be understood at a glance, mastered, and crushed all geniuses!

Clone [Sword God Wuwo]: The power of swordsmanship skills +200%, the speed of swordsmanship skills training +200%, let you be tyrannical, I will kill you with one sword!

 …

“You never know how many avatars are working hard behind the person chatting with you in front of you!”

“The avatar did it, what does it have to do with my body?”

“What I’m most afraid of is that others will bully the few with the more, anyway, not as many as me!”

- Description from novelbuddy

“I think… my boyfriend is trying to kill me,” Lin Sanjiu muttered.

As she thought about that rich, handsome, and gentle boyfriend of hers, she could not help but tremble all over.

At the present, someone close to her had personally raised the curtains to an apocalyptic hell, and slowly, it was creeping up to her.

—-

What if earth devolved into a apocalyptic hellhole? What if you found out you not only have to survive just one apocalyptic event but have to struggle through multiple worlds with different end-world scenarios? And you get to meet more superpowered crazies than you can imagine!

Presenting the worst nightmare that your weird doomsday prepper neighbour with a bunker full of canned beans could have, Doomsday Wonderland is a novel filled with subverted tropes, non-OP characters and a female friendly label which offends all politically correct fanatics.

As ‘lucky’ humans evolved to posthumans with abilities to adapt to the New World or mutate into disgusting duoluozhongs to survive, follow Lin Sanjiu as she struggle through the multiple challenges to just live one more day… and make sense of this New World that will no longer be the same.

- Description from Novelupdates

Lin Fan acquired the Sign-in System that led him on the path of the life of a god-level nouveau riche.