MTL - History’s Strongest Senior Brother - ~ Summary in March

This is a story of a man named Kim Sae-Jin, who one day, inexplicably wakes up as a Monster. Follow him and his perilous journey to get his life back as a Human, all the while growing even more versatile as a Monster in the process. This should be… complicated, somewhat.

Burdened by the crushing debt of his parents, Lex never imagined a life beyond endless work and grief. But fate had other plans.One fateful day, an accident ends his mundane existence—only to thrust him into a world of fantasy. Reincarnated as a side character doomed to fail, Lex now inhabits the body of a so-called teacher—a fraud with no real skills, destined for disgrace.Standing at a crossroads, he faces a choice: follow the canon and flee from his inevitable downfall, or defy fate and carve his own path.Just as he considers running… a voice calls out.[Need some help?]Grasping the talent that his predecessor never realized he had, Adrian decided to defy his fate and become a true Runesmith.However, he never expected that once he would start on the path of becoming a Runesmith, he would start gaining so many connections.[Ding!][Cross-dimension group chat has been activated!][Hero of World Nebula: Old man, when can I get my sword done?][The untamed witch: When will you help me with my staff?][The obsessed one: Darling, when will you do me-I mean, when will you do something about my blades?]....what the heck is all this?°°°°°°°°°A/N:- Read the first few chapters, before deciding to drop it.English won't be perfect, but it will be readable.Additional tags: Cross-world group chat, possessive characters, sudden strength gain, overpowered MC, broken engagement.

Ham Dani, a normal student whose hobbies were to read novels.

Joanne Smith, weighed down by significant debt and humiliated by Jeffrey Winchester's cruel rejection just a day before their wedding, transformed her life into that of a multi-millionaire entrepreneur, allowing love to fade into memory.Joanne had one rule in life: money first, emotions later. She built an empire from the ground up, balancing her booming logistics company with the peace of her family farm.When a rugged stranger shows up, desperate for a place to stay, Joanne reluctantly takes him in as a paying guest. But little does she know, he’s not just any guest. He’s the man who brutally rejected her years ago, the one she’s long since forgotten.And he remembers everything differently.Now, living under her roof, he’s fueled by the sting of his own downfall and a hunger for revenge.Will the truth tear her world apart—or bring a reckoning neither of them saw coming?Join me on this incredible journey to find out!I will provide daily updates, and I would love to hear your thoughts in the comments. Please consider leaving a review and supporting me with GTs, Power Stones, and gifts.I hope you enjoy this story as much as I enjoy writing it!