Have been digging for a story I believe I saw on Tapas around 5 months back. The genre was fantasy, with returner as a focus, the first episode started off with a "flashback"/"prologue" of the MC injured and standing on a battlefield, facing a villain, the villain offers the MC a position by his side to help him conquer the world as a reward for the MCs tenacity, but the MC refuses and goes through a flashback of a girl. The line from the scene went something like: "She would always tell me..(insert tear jerker)". And than the MC fling himself at the villain, only to be brought back to a place in his childhood.
Sincere apologies if this sounds like every other returner story out there, but it's what I could remember, thank you for any help you can provide, even a point in a direction would be wonderful, thank you.