In these 7 days, he already came to the inner area of that gate. Naturally the power of those monsters also increased in that place and because of this, the situation also became difficult for him. But, he didn't just directly increase his level. Only when he felt the power of those monsters already exceeded the limit of his full strength, he decided to level.
You can say that most likely he would be able to handle all the monsters just after becoming a level 35 Warrior but then he decided to already become a level 40 warrior, as he already planned that. With that naturally those Monsters present there once again became weak compared to him. Right now as you can tell only those Monsters who are already able to reach level 50 or Level 49 are able to give me a good fight.
