MTL - Monster Factory - ~ 1221: Inappropriate training course

After a tragic accident that claimed the lives of his parents and little sister, Leo, just 17 years old, found himself shouldering all responsibilities alone.By some miracle, he survived the past four months on his own—attending high school, juggling multiple part-time jobs, and enduring sympathetic gazes that pained him.The only respite he found was in books, which offered him an escape and some semblance of joy.One day, while engrossed in the book 'Path of Heroes: Battle Against the End,' his life took an unexpected turn.Halfway through the story, he inexplicably found himself transmigrated into the world of Path of Heroes, inhabiting the body of Azriel Crimson—a character never mentioned in the story's first half.An extra.Someone seemingly irrelevant to the plot.Unfortunately—or perhaps fortunately—fate had other plans, and Leo soon discovered that being a mere extra was not his destiny after all.

Nagi Travers, a 20-year-old shut-in and former gaming champion, lives a miserable and isolated existence after being tormented by bullies throughout his life. Fired from his last job and grieving the loss of his parents, Nagi now survives by playing video games and barely ventures outside. His world spirals further into despair when he encounters Jake and Mary, his former high school bullies, who humiliate him and steal his money.Broken by the return of his tormentors and the weight of his past, Nagi contemplates suicide as his only escape. Just as he’s about to take his life, a small girl’s ball rolls into the street, with a speeding truck barreling towards her. In a moment of selflessness, Nagi rushes out and saves the girl, sacrificing himself in the process. Fatally injured, he reflects on the idea that it's better to die doing good than bad.Nagi awakens in a surreal, white world, where he is greeted by an angelic figure who offers him two choices: remain in eternal peace, free from suffering, or be reborn in a different world where he could seek redemption and a second chance at life. Nagi faces a life-altering decision—rest forever or attempt to find meaning and fulfillment in another world.

Wan Tong was bound by the “Corpse Collecting System” and travelled through various small worlds. Her mission is to use the big boss’ white moonlight’s body to resurrect and stop raiders from looting the big boss’ luck.

Wan Tong : Didn’t you say that the big boss has no emotional line?

System : Who brought the white moonlight back to life →_→

Wan Tong : …. sob, sob, every day I try my best to help the boss deal with the raiders, but the boss is thinking about how to attack her!

PS :
(1) The male lead is the same person, the white moonlight is the original MC, which is mentioned later.
(2) Every world is probably sweet love

T/N : white moonlight = first love

- Description from Novelupdates

All the firsts I want to remember were with you.From the summer when I was eighteen and knew nothing to the summer when I turned thirty-one and learned so much.Even the seasons without you felt like you were deeply ingrained.“We’re just friends, so there’s nothing special between us.”You pushed me away with a poker face, but because we were friends,I endured those countless days,and it seems you still don’t know it.So, it looks like I’m going to repeat the same futile effort.“Did I ask if you needed a man? If you do, I’ll be your man.”You need to get to know the thirty-one-year-old me.If you look at me with those eyes you didn’t see before.“You’ve become a real troublemaker.”Now that you’re here, it’s just the beginning of .