I dont see why this isnt a popukar manhwa. Yes the FL is alittle clueless at time, the ML is reckless and stubborn but honestly thats why makes this good. Its realistic. Its just enough where its not frustrating. I honestly didnt think it was boring or dragging. There are questionable things where I was like "why tf didnt they just do" or "did he just forget abour the fact she" but like....it wouldnt be fun if all characters were stubborn like that lol anywho, its very heart warming and was (kind of) and open ending. I dont usually enjoy those kind of endings, but this wasnt too bad.
The Last Immortal's Theorem