My Space-Time System

"What happened? Is the boss okay?" The explosion threw the gang members into more chaos. The explosion seemed to be coming from the dining hall where they were headed to.

Was it still right for us to keep retreating to the dining hall?

The thought of the strongest person they knew coming to save them came into their minds, but that was when they remembered he was in the dining hall area.

Also, he should have already heard the alarm and come to meet the intruder, but the fact he wasn't here meant he had either escaped or his fight with an intruder caused the explosion.

The gang members were still contemplating on their next course of action, but that was when they heard an agonizing scream.

"AHH!"

When they turned to the direction of the noise, they saw one of the pyromancer was in mid-air with a black tendril pierced into his chest and through his heart. Instinctively, those around Castiel and the pyromancer tried to distance themselves, but it was too late.

9 black dark ethereal tendrils shot out of Castiel and into the gang members, before lifting them and using them as human shields.

Castile didn't waste time lunging at the gang members and using Typhlosion to end their lives.

The sounds of screams from the human shields echoed throughout the entire corridor as the other gang members were raining spells on them in an attempt to stop Castiel on his rampage.

It didn't take long for them to realize that their numbers were only reducing but they hadn't landed any hit on Castiel.

"Is this a kid or the devil?!" Some of the gang members who had lost hope stood still waiting for their turn, but that was when a voice was heard from the back.

"Run for your lives!"

Like a domino effect, the gang members began running towards the dining hall, but this only made Castiel.

…

When Blake stepped out of the office he saw the dining hall in chaos. Many were coming in from the corridor and moving into the corridor leading to the escape route, but soon some were seen flying and running out.

BOOM! BOO!

The corridor continued to tremble until Brian who was in seismic guard came out. With tyrannical boost active, every step he took made the ground slightly tremble.

A gang member who just arrived at the dining hall and immediately went to face Brian with a longsword, but Brian caught the sword before breaking it and grabbing the arm of the bandit.

BOOM! BOOM!

Stomping his feet on the ground, Brian sent a seismic blast to his chest, causing it to cave in and instantly killing the gang member.

'Thinking about it, thanks to the seismic guard Brian now has a lot of attacking capabilities. I should be giving him only lookout roles in missions.' Blake thought to himself.

At that time, the gang members who were still alive had all gathered in the dining hall and their number had been reduced to 19. The gang members couldn't believe that it was teenagers that were causing so much chaos, but they didn't dare to move even a step closer to them.

That was when they saw Blake who was at the other corner of the room. With the night veil covering his armor and with what seemed to be a plain greatsword in his hand, Blake looked like the weakest when compared to the devil with flaming daggers and the one that literally made the ground quake as he walked.

Being in the center of danger and having nowhere to go, their instincts kicked in and most of the gang members began rushing towards Blake, but only a few didn't move. The minds of those that rushed forward were so clouded by fear that they didn't notice where Blake was coming out from. 

'Looks can truly be deceiving.' Castiel shook his head when he saw the gang members going for Blake.

…

After they were done at the hideout it was already evening. So they took a carriage back to the school before making a report on the commission.

"The gang wipe was successful, but I want to make a complaint and seek compensation on the incomplete info given by the hirer." Blake reported. On hearing the complaint, Susan began taking notes as Blake narrated what went on in the hideout.

After he was done with the report, Blake told Susan about their plan for the second gang wipe mission, but to their surprise, the commission was handed over to another party.

"What about the investigation commissions?" Blake asked.

"The first one is an open investigation mission to which your team has been invited to. It was commissioned almost a week ago and the parties involved so far already have a head-start. So I advise you to go with the second one which is a private commission." Susan said.

"You don't have to worry, a head-start doesn't make any difference." Blake said with a smile.

"Your party will be added to the mission. As for the compensation, you will surely be receiving one." Since she couldn't force Blake to take her advice, Susan could only add their names to adventurer parties involved in the investigation mission.

Immediately the communication link was cut, the trio began looking into the mission. It turned out that a merchant had hired a B rank adventurer party to protect his warehouse in the mid region of the city, but they were outnumbered and overpowered by an unknown gang.

2 of the members of the adventurer party were killed in the mission and a lot of goods were carted away by the gang.

"This is a powerful gang and I don't think we want to mess with them." Brian was a little bit scared after reading the info.

It was obvious that the gang was not like the ones they have faced so far.. If they killed 2 B rank adventurers then handling C rank adventurers would be easier.