MTL - I Made Scientific Magic - Chapter 353 These wizards have been bewitched by the devil, and their sanity has been reduced.

Ethan died of terminal illness and woke up in the body of a teenager named Luis Suarez, who was assassinated. To his surprise, he was in a parallel world and moreover in the world of a game that he used to play. Now he is stuck in a dangerous game like world. As a character who died, even before the start of the game story.

Now follow Luis on his journey to find out whether his involvement will change the fate of this game like world whose ending was doomed.

While the blue light blossoms, the insignificant struggle at the bottom. He grasps the opportunity to change his fate and embarks on an unprecedented path…

Follow Chen Ming as he accepts disciples, establishes a sect, and fights his way in a world that deems him a cannon fodder.
He goes against any common sense using his wits and novel knowhow to finish missions and arm himself against his cruel fate.

- Description from Novelupdates

High-school student Koremitsu Akagi finds himself attending the funeral of Hikaru Mikado, who had died in an accident during Golden Week. He’s not sure why he’s there, as he only exchanged a few words with Hikaru at school. However, Hikaru doesn’t seem to be completely gone from the world, as he comes back as a ghost in order to fulfill a promise to Aoi Saotome, his fiancée. Since Koremitsu is the only one who can see him, he asks him to carry out his promise in his place.

Complying with his request, Koremitsu tries to fulfill Hikaru’s promises to the rest of his “girlfriends”, helping them overcome past misunderstandings and repair broken relationships.