The Dark Lord and the Four Empresses

In the undiscovered dark cave in the undiscovered island are found by the greatest adventurer and archaeologist in the world. He wants to explore all undiscovered places and find some valuable artifacts to increase his reputation of being adventurer and archaeologist. The dark cave has strangest and stronger monster than the monster in the outer part of every nations so he gotten serious in every monster that he encounter. These monsters are agile but they are lower level than the adventurer so all of them are killed by adventurer. The adventurer get the monster's drop and proceed to explore this cave. When he enter to the narrow hole of this cave, there is a monster who suddenly attack him at the front. The adventurer got huge damage and his health turns into half. He surprised the unexpected attack but he still surprised that the monster who attack him is same level as him. Note: The name of the adventurer is Coby and he is Level 60 with 2343 Health and 1352 Mana. The monster a giant scorpion with poisonous tail and it's head is just like an alligator with sharp teeth. This monster has no Mana but 15 times higher than health of the adventurer. Coby got some nervous but for the sake of being greatest adventurer, he fight the monster in order to get some value items. The monster is faster than the previous monster that he beat easily but he didn't intimidated because he still faster than his opponent. He made damage a lot the monster and released critical skills from the back of the monster, that's why the monster screams at agony. After that, the monster get outrage, it's movement becomes double. He surprise in this situation, the monster suddenly swing it's poisonous tail and unfortunately, it grazed into his body and screams at agony after that pain. Coby has only 459 health but after 5 seconds, his health burnt 120 damage because of the poison. He drinks the potion from his inventory, the potion that cleanse everything but his health is only 339. He have no only choice, in order to survive in this death match is to kill this monster. Coby charge to the front of the monster then the monster swing it's tail and luckily Coby manage to dodge it and he apply his skills in his sword to cut the tail. Luckily, the monster got 11080 critical damage with 3361 burn damage due to the pain he acquired every second. He wait 4 seconds and finally the monster passed out. The monster suddenly decay and drops an item. He walk to get the item but in a second, he burnt 99 in his health. He surprise that he got burned again from the poison. The potion that cleanse everything in the apothecary in his town is not enough to cleanse the poison he got. He didn't expected that the monster he'd encounter has a weird and tremendous venom. He's health now is only 240 and he had no longer health potion. He pick the item and rush proceed to the next part of cave. In five seconds of running, he finally came to the end of the cave which has a tomb in the middle. He got 99 burn damage again, so he has only 141 health. He don't know when the poison duration will stop but he feel that this is the end of his journey. He thought the tomb that he saw is the sign which is the fate of this journey, so he went at the front and open the tomb. When he open the tomb; Coby: *Surprised* What the hell! A dead devil? After that, the corpse starts moving a bit. Coby got scared and starts vibrating. The devil open his eyes and suddenly stand up in the front of Coby's eyes. Note: The Devil name is Ashura. Level 65, He has 3182 Health and 1923 Mana. Ashura: *Stretching and cracking all his joints* Ahhh what a wonderful nap *Stares at Coby* Yoww! are you the one who open my tomb? Coby: *Nervous while grinding his teeth* Yes! Ashura: Woah! Thanks! I owe you a lot. Coby: *Feel the pain again. He kneeled because of so much pain and screams too loud* Ahhhhh!!!! Ashura: You burned 99 of your health and you have only 52. Coby: Pls! Help me *Heavy breathing* I-I got poisoned by the monster earlier. Ashura: Ok, what is your name? Coby: I'm Coby Stounder. Ashura: Nice meeting you, Coby *Raise his hand and he open wide his palm in the top of Coby's head* (Smirk) You wake me up in the undetermined duration of sleeping. I wanna make sure you will be my Right hand my Darkness. Ashura cast some dark power through his hand and apply it to Coby. Coby's health get full and not only full yet it increases 100 in his health. Same as his Mana that increases 100 though. Coby feel some strange power that flows all over of his body. Coby: I feel some strange powers flow in my body, what did you do? Ashura: *Smirked then laughed* Soon, you will realize it when you are in uproar. Let's take an exit in this cave, can you please take a lead. Coby: O-of course *He starts walking* After they walking beyond 10 meters, there are monsters suddenly attack from there front but they easily dodge all attacks from them. Coby: *Surprised* Ashura: Woah! These monsters is half of my level and looks like ferocious. Coby got frightened and much nervous because monsters are the same as his previous monster he fought. There are 4 monsters and it's seems that they are hungry to kill creatures. The escape route was blocked by these monsters, he has no option so he should kill them all. The first monster attacks by swinging it's tail but he easily dodge it. When he dodged it, the second monster attacks from mid-air. It seems that the monster predicts the movement of Coby so has no option but to take that attack but Coby's body reacts and he managed to dodge that dreadful attack. Coby: *Surprised* What happen? My body moves by itself. Ashura: *Smirked* "It's quite fast than to my expected. The Dark power starts reacting."