I Became the Strongest in Another World, So Why Am I My Sister’s Punching Bag?

The subject matter of this novel is not bad. The plot in the first few dozen chapters is not bad, but it is not good starting from the banquet. There are always conflicts inexplicably. A little show of strength can avoid inevitable troubles. As for the male protagonist's strength showing too much change before and after, it is not a problem. The background of this novel is It's all about strength. The male protagonist is currently the strongest. With 10,000 magic powers, he can do whatever he wants, but there are too few ways to acquire skills, which is a common problem for the protagonists in the novel. Moreover, the male protagonist was a mercenary in his previous life, but the shaping of the male protagonist's character needs to be improved. Generally speaking, it is okay.