Good book so far. The only thing that bothers me (besides the grammar which is understandable) is the skill usage. In the boss fights his most useful skill Over limit is only used last minute or not at all? The skill has a 30min duration and a 40min Cooldown why isn’t he using it every time he fights? There’s only a 10min break when he would be “weak.” I would understand using it as a trump card if the skill has a duration of 30 seconds... but 30mins?? The fights seem to last no longer than 5-10mins if you base it off his acceleration skill. It’s just not realistic that the MC gets handed a power boost with no negatives and he doesn’t use it unless he’s close to dying... why even let yourself get that close when you can be safe... after all he can’t respawn!