MTL - Devouring Myriad Ghosts System - v2 Chapter 782 The confusing 2 day time limit (below)

Based on the popular Vocaloid series, by HoneyWorks, called “Kokuhoku Yokou Renshuu (Confession Rehearsal)“:

Natsuki, a third-year at Sakuragaoka High School, who holds unrequited feelings for her childhood friend, Yuu, who’s in the Film Club. However, instead of being honest about her feelings, she makes him be her confession “rehearsal” partner. Unable to say her true feelings, things start to get complicated when Miou and Akari, who are also in the Art Club, get involved! Will she ever be able to confess for real!?

Once again, as he opened his eyes, Ning Changge awakened his extraordinary insight, only to find himself reborn as an abandoned infant.Coincidentally, Zhang Sanfeng passed by and took him in as his eighth disciple.From then on, on Wudang Mountain, there was an unparalleled prodigy with extraordinary insight. While others practiced martial arts or cultivated immortality, Ning Changge aimed to forge a path to eternal life in the world of martial arts!【You studied three thousand classic scriptures, mastered three hundred inner cultivation techniques, and, with your innate inner energy, created the “Eternal Green Immortal Technique”!】【Reading a hundred volumes of swordsmanship, observing battles between peerless swordsmen, you gained insights and created the “Gold-ranked White Tiger Sword Qi”!】【You established the Immortal Sect, spread the teachings of immortality, and led people around the world to cultivate immortality. You observed the path of mortals cultivating immortality and used their inspiration as nourishment, creating the “Great Dao Elemental Infant Condensation Technique”!】【You led the world to ascend, and the world’s will rewarded you with the Supreme Merit Golden Dragon feedback. You refused to absorb it, pondered carefully, and created the “Supreme Merit Body Forging Technique”!】Martial techniques, passing them on to others…

One day, Luo Jian woke up from his sleep and found himself in a locked chamber where the door and window were all sealed. A note with a few lines written on it was tacked to the wall: “Escape from this room within an hour, otherwise, you will die.”

There is a sequel called Reincarnation Night (轮回之夜) that takes place in the same universe but has different main characters

- Description from Novelupdates

Youth, is meant to be used to shed sweat under the sun!

Youth, is to continuously engage in battles, and secure the win! The endless journey on Heaven’s Road, an endless expedition, a testimony of a hot-blooded youth’s legend!

A dream every man harbors, with the ignition of the blood! Forever young, Undefeated God of War!

- Description from Novelupdates