Stuck in My Sister's Dating Sim

All Jinsoo Lee ever intended to do was save his younger sister's dating simulation game—somehow, that simple goal ended with him trapped inside it. One moment he was an ordinary player; the next, he had been transmigrated into a world he knows all too well, having already played the game through before. Unfortunately, his familiarity with the story offers little comfort once he realizes whose life he now inhabits: a trouble-making, good-for-nothing villain fated to die far too soon. Knowing exactly how this tale unfolds, Jinsoo devises a modest survival plan—keep his head down, live as quietly as possible, and figure out a way to return to his own world. But nothing ever goes according to plan. Despite his best efforts to avoid attention, events refuse to follow the script, and the peaceful existence he craves drifts further out of reach with every passing day. Cast as the doomed villain of his sister's dating sim, can Jinsoo ever find his way back to reality?