Dark Warlock in the Apocalypse - Chapter 141

A mecha otaku is reincarnated into another world as Ernesti Echevalier (Eru). In this world there exist huge humanoid weapons known as Silhouette Knight. Dreaming of piloting those robots, Eru, with childhood friends, Archid Walter and Adeltrud Walter: together they will aim to become a Knight Runner, pilot of Silhoutte Knight.

Hello, my name is Bologue Lazarus, a debtor.The wound on Bologue's face is healing at an observable speed. The blood remaining on his face flows back, and the skin is reattached, as if time is reversing.Faced with the terrified dying demon, he whispered.This is my “blessing”, the “debt” I owe.Sixty-six years ago, with the end of the Scorched Earth Fury, Opus of Oath City rose from the ruins of the Holy City.Sixty-six years later, the Kagader Empire and Rhine Alliance, two colossal entities spanning the continent, are plotting another all-consuming war.Order Bureau, King's Secret Sword, Order of Truth, Corrupted Sect, All Secrets Order... existences hidden in the shadows of history, trying to join this grand celebration.Under the curtain, the devils enjoy the agony of mortals, taste the values offered, manipulate fate, and bestow curses and blessings.Gazing at the mortals who were originally kindred spirits, they loathe and slaughter each other...

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

Reiji Tsukishima never believed in chasing after something he couldn't have—until he met Aoi Fujikawa. Calm, composed, and always in control, Reiji found himself drawn to Aoi’s warmth and kindness. The only problem? She was already in a relationship—with another girl, Sena Tachibana.From the very start, Reiji and Sena clashed. Their personalities, values, and even the way they looked at Aoi put them at odds. He made it clear—he liked Aoi. And Sena? She wasn’t about to let some guy disrupt their relationship.But fate had other plans.Despite their rivalry, Reiji and Sena kept crossing paths, their conversations sharper than knives yet laced with something neither wanted to acknowledge. Over time, they found themselves entangled in something deeper—something neither of them expected. A connection that rivaled the very love they were trying to protect.As emotions shift and tensions rise, Aoi remains unaware of the growing bond between the two people she loves the most. But when the truth finally comes to light, all three must face a question with no simple answer—can love truly be shared, or must someone be left behind?A slow-burn romance of deep emotions, unexpected confessions, and a love that defies the norm—this is *Unraveled Ties.*---