Homunculus Rebirth - Chapter 24: What awaits on top

An RPG gamer who played the realistic VRMMORPG ‘The Amber Sword’ for years, finds himself teleported to a parallel world that resembled the game greatly. He takes on the body of an NPC who was fated to die, and with the feelings of the dying NPC and his own heartrending events in the game, he sets out to change the fate of a kingdom that was doomed to tragedy.

- Description from novelupdates

Eight years of climbing the Tower taught Dante one thing: trust gets you killed.He learned that lesson when his best friend sold his entire party to the enemy. Now he's back at the beginning with eight years of future knowledge, a dead sister who's suddenly alive, and a front-row seat to watch his future betrayer charm everyone around him.The smart move would be to kill Adrian now, but Dante has a better idea.He's going to smile, play along, and take everything Adrian wants for himself, the power, the connections, the allies and before putting a knife through his empty heart.Revenge is a long game. Good thing Dante already knows how it ends.

A tree of 10,000 flowers, the world is the door.
The spells change a lot, but the hearts of the people are unchanged.

- Description from Uukanshu translation

A broken man who ended his own life finds himself reincarnated into the game he used to play. However, instead of becoming the protagonist or a powerful antagonist, fate places him in the role of a minor villain—a mere stepping stone for the protagonist in the game's first arc.