MTL - That Person In That River and Lake - Chapter 528 fight up, fight down

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.

- Description from Novelupdates

A catastrophic rift has torn the world apart, tearing open the fabric of reality and unleashing hordes of demons upon humanity. As the world is thrown into disarray, cities fall, governments crumble, and the once-thriving human race finds itself on the brink of extinction. What was once known as civilization is now a nightmare of chaos, destruction, and monsters. Amidst this apocalyptic nightmare, Selene, an ordinary woman, finds herself thrust into a brutal new reality.After a near-death encounter with a demon, she awakens a mysterious lust system within her—one that demands intimacy to grow stronger. This power grants her extraordinary abilities but comes with a dangerous cost: to survive and protect those she loves, Selene must navigate a world where every bond she forms feeds the system’s insatiable hunger.In a world ravaged by demons and destruction, Selene must learn to wield this power before it consumes her completely.

After self-sacrificing, Yuri transmigrates from an apocalyptic to an interstellar era, inhabiting a disabled girl's body. She enters a joint marriage with a similarly disabled SSS-tier alpha, gaining a share in an ore planet. Determined to help her husband regain leg function and reclaim his SSS-rank, their journey together unfolds.