My Space-Time System

When Blake used mana vision to look at the concealed stone door at the side, he studied the flow of mana and found out that it could only be opened from the inside with a pattern, but that was if he planned on opening it normally.

Blake quickly went to work, and in under a minute the stone door slightly trembled before opening inwards. In front of him was a lit corridor that branched to the right.

After confirming with heat vision that there was no one in the hall, Blake activated lightning reinforcement and sped down the corridor.

…

At the entrance of the hideout.

When they were planning on how to raid the hideout, they had seen no need to be quiet about it. The numbers and strength of the bleeding street gang were below that of the black scorpion gang. So, if they were to attack from different angles it would put the entire hideout in disarray.

BOOM!

Immediately Castiel blew the entrance open, the alarms went off, alerting the entire hideout of the intruder.

That was when Castiel planted the mana disruptors, but the alarms had already done their job and the gang members were already rushing out of their various rooms, but stealth wasn't the reason Castiel had set the mana disruptor, it was darkness.

Zzzzg Zzzzg

The mana disruptor activated and a shockwave of mana was sent into all the channels of mana before reaching the core and shutting it down. Alongside the alarms, lights went off, plunging the corridors into darkness. 

Darkbringer.

The gang members had seen only one person who seemed to be a kid and was about to pounce on him, but he soon disappeared into thin air and instantly the gang members began dropping on the ground with slit throats.

"What the fuck is going on?!" The gang members were confused and terrified at the same time.

The corridor could fit 5 men standing side by side, but even though they kept on firing spells in all directions, they kept on dying.

"Remember the drill. Retreat!" One of the gang members shouted. One of the gang members was smart enough to realize that if they stayed there they would all end up dying.

Once the other gang members heard the command, they all started retreating in an orderly fashion as the pyromancers lit the corridor with their flames.

'They are more organized than the last gang. This would be fun.' Castile who was standing upside down could have chosen to go after the pyromancers, but he decided to wait.

…

At the other end of the hideout, Talon, the leader of the bleeding street gang was making his way out of the hideout through the secret escape route.

From the moment the alarms went off, he had decided to flee and not fight back. For the fact that someone was able to find out about their hideout and still decided to attack meant they had the power to kill everyone in the hideout.

As for the escape tunnel behind his desk, no one in the gang knew about it because he was the one that dug it himself.

"Let's just hope that most of them manage to escape." Talon thought as he drew a pattern on the wall behind his desk.

The wall opened up to a dark corridor and he walked in, but before he could take another step forward he saw sparks of white light.

"Shit!" By seeing the white light, Talon realized that his secret escape tunnel wasn't a secret anymore, he instantly cast earth eruption. 3 layers of earth walls erupted from below, sealing off the corridor. 

He immediately stepped back to shut the main stone doors, but before the door could fully close, Blake stabbed Ebony and Ivory in their combined form into the rock while firing out a flameburst from the same hand.

BOOM!

Coupled with its extreme sharpness and piercing power, the greatsword went through the layers of earth and broke right through the door which had just closed shut.

"We always have to make sure." Blake wasn't done yet.

The moment the greatsword left his hand, Blake jumped backward and charged a flameburst almost half his size, before throwing it at earth walls and stepping back into a spatial tear.

BOOM!

The explosion sent out massive shockwaves that caused the entire hideout to quake.

[I know you are in a hurry, but that was overkill.] The system said to Blake who had arrived back at his original spot.

"You could say, I was adding to the chaos." Blake said as he walked across the rubble to pick up Ebony and Ivory which was stuck in the chest of the gang boss.

"Yeah, guess that was an overkill." Blake said as he pulled out the great sword from the mutilated corpse that had chunks of rock in it.

[Guess he was still shocked by the sword that pierced through his armor, that he didn't have enough time to prepare any kind of spell.] It didn't take a second for the system to reconstruct the scene of how the gang boss died.

"It should be easy from here on." Blake said as he covered himself and blended with the environment before leaving the boss' office.

…

At the entrance, Castiel had been watching the gang members slowly retreat toward the dining hall.

The reason he was hesitant to attack the pyromancers was that the gang members were smart enough to surround the pyromancers who were providing light.

If he was to attack any of them there was a chance they would sacrifice their gang members just to make sure they get him.

BOOM!

It was then that an explosion was heard from the direction of the dining hall, causing the hideout to quake.

"This is my chance!" Seeing the gang members getting distracted by the explosion, Castiel dived into the midst of the gang members and appeared beside one of the pyromancers.

"AHH!" The pyromancer screamed in agony as a black tendril pierced into his chest and through his heart.