Woo, so far this looks great. I hope this is a somewhat tasteful revenge plot instead of one of those too-sadistic ones where the MC basically becomes just a complete sociopath.
I tought the brother was thrash in the beginning of this story, but no, he was actually probably the best son alive, risking his life only to cure his mother.
Too bad he had bad luck, bot for his life, and for finding the cure too late.
The story seems promising. Could become medicore if mis handled mainly due to how many of these type of manwhas exist. It seems to take a criticism that existed even in the WN for solo leveling (MC seemed to forget about his mom for half the story lul) and flip it on its head. It can be a good thing but at the same time this intro felt rushed compared to other stories of the same cliche plot devices. It can also be a good thing to just jump right into the story but the intro has definitely suffered