Arriving at the goblin territory, Zen asked Romu to keep his guard up while he started investigating.
Walking everywhere to look for some clues or hints, Zen was determined to solve some mystery that's clogging his mind.
The goblin territory has huts in almost every possible vacant space and there was a large black door in the back. The black door may seem suspicious at first sight but Zen wanted to search every other hut for clues before going ahead in the black door.
He believed it to be a smokescreen or decoy to distract him since it was so obvious that you can see it at one glance.
Time slowly passed by and Zen searched everywhere except for the black door. Zen was ticked off as it seems like he was so suspicious that he became a fool for not investigating the black door first.
'Seriously, who the hell hides a secret with such an obvious hint?' Zen cursed inwardly as he walked toward the large black door.
Standing in front of the large black door, Zen slowly places his hand on the door to see if he can push it open. Alas, the black door wouldn't budge an inch and Zen tried to increase his strength.
'Damn it, what kind of door is this made of? How the hell are the goblins going to open this tough door?'
Zen was confused by such a design if the goblins couldn't even access the things behind the black door.
"Master, I think I've seen this black door before," While Zen was busy cursing at the creator, Romu suddenly said to Zen regarding the black door.
Zen brightens up as he gazes at Romu deeply. "Really? Tell me everything you know about this black door."
Romu took a few moments of silence before saying, "I recalled seeing this black door when we first arrived at this labyrinth. Also, there was some kind of chanting that one must do to open the door but I can't remember the chanting."
'Of course, you don't remember the chanting but know about the method. Definitely not cliche or anything like that.' Zen scoffed inwardly as he still has to figure everything out on his own.
There was never an easy time for him where he could just do everything successfully without any obstacles blocking his path.
"Romu, try to use your acid shot to melt the black door," Zen ordered since violence is the only option now.
Romu didn't waste any time as he started firing his acid shot at the black door. However, it wasn't obvious that the black door remained still and undamaged despite the corrosiveness.
"Meh, it was worth a try at least."
Zen shrugged his shoulders as he ordered Romu to stop wasting his energy. Afterward, he tried to use his BloodJade Flame to see if he could melt the black door with the heat intensity.
Alas, it was like the black door was completely untouchable as it took zero damage.
"This is just great. Even my essence flame is powerless. If only I can still communicate with Cecilia then I could have cracked this door open." Zen was irritated and decided to do one last try.
A try that is ridiculous and wouldn't make sense at all.
"By the power of my words, please open the door," Zen said in a crazy manner, hoping the door would react.
Romu was also dumbstruck by the behavior of his master but decided to stay silent and simply watch the scene. 'Master must have been exhausted and depleted in his mind that he started going crazy. I better keep my mouth shut to avoid being punished.'
The door didn't react, causing Zen to look like a goddamn idiot that's trying to communicate with a door.
"Fuck you piece of shit door, open the fuck up or I'm going to pee in you," Zen kicked the door as he shouted in anger.
Seeing zero reaction, Zen decided to unzip his pants slowly as he prepared to urinate on the door.
Suddenly, the door starts to creak open slightly, causing the ground to tremble from the pressure of the sudden movement.
'Master's threat work?' Romu was shocked inwardly when the door decided to move on to Zen's threatening action.
Even Zen was dumbfounded by the door's sudden opening. 'Can this door really be a conscience that understands me?'
"Heh, at least you know my prowess now. Should have done this in the beginning," Zen exclaimed as he zips back his pants quickly.
The door continued to take a few minutes before it completely opened and Zen held a solemn expression.
Inside the room, there was nothing. There wasn't even any furniture inside the room and the path was so short that it seemed like a small cave.
Zen glanced at Romu in confusion and Romu used his slimy body to shrug his hand, indicating he had no clue as well.
Instead of second-guessing each time, Zen decided to step into the room and start looking everywhere. The room was pitch black compared to the outside where there's still light so he decided to snap his finger to bring out the essence flame.
However, as soon as the essence flame illuminates the room, the door shut at a swift pace, completely opposite of the slow opening phase.
'Damn it,' Zen cursed inwardly as he tried to walk back out. Alas, he could only stop in his path since the door is now shut.
Luckily, Romu was still outside and hadn't entered the room yet, or else he could only be stuck here without anyone knowing.
"Romu, can you hear me?" Zen shouted to Romu who is currently outside.
"Yes master, I can hear you very well," Romu replied hurriedly in a panic and worried tone.
"Good, go back and meet up with Krista Dragoon. Tell her that I'm trapped in here." Zen ordered loudly.
Romu quickly replied to Zen before leaving the goblin's territory to find Krista Dragoon.
Meanwhile, Zen continued to stare at the walls and since the room is now illuminated, he can finally see some texts carved in the wall.