The pacing is garbage. After he clears the initial dungeon, he becomes a tool for others to explore dangerous areas. Everyone else seems to know more about what's going on than the MC, who is just happy to be kill more people and do what others are telling him to do without knowing proper reasons.
So far, they don't even compensate him for his hard work, while the game constantly keeps targeting him specifically. He just keeps gaining stats which is not a satisfying reward since damage numbers and health don't mean anything.
Up to 220 chapters and I haven't seen any clear racism or nationalism. Not sure what the 1 star review is talking about. The novel is fine, though a lot of the plot twists seem too complicated and impossible to find out if it were actually a game. Would probably rate around 4.1/4.2 on this site.
Honestly to an extent I can even ignore the nationalism. But the time travelling nonsense and the fact that other characters barely seem useful at all are the major problems. MC gets rare items to drop, only to find out that this item is super rare and actually it takes others a month to grind a boss to drop the same item. Some bosses seem to drop equipment that has no relation to the boss, just because the plot needs to move. There are many other annoying aspects, but after a time it's just boring. I read it because I thought the MCs powers were interesting, and I've got enough of what I was looking for.
Agree with Eaturne's review. The start was great. But towards the middle the style of the story got wierd. Not even about pets anymore at times. I wanted to see evolutions of pets but it doesn't seem to be progressing. Also around chapter 200 the nationalism comes in once again. So annoying. The novel is probably 3.5-4 stars in the early section, but not more than 2 stars after chapter 150 or so.