The people present there who were attacking Kuroka earlier were silently watching the interaction between the SS-CLASS stray devil and the newcomer human. They were then brought back from their stupor by the human insulting them.
The leader of those men got angry and said, "why you shitty Human. How dare you call us devil degenerates? We were waiting silently because-" He paused for a while thinking about something and said, "because we were giving you some consideration as this will be your last time talking yeah that's why right guys." The others who heard his excuse were looking at him with an expression which said, 'Seriously' but none the less his subordinates agreed to his claim.
Tatsuya sighed in annoyance and said, "you know what I am not in the mood right now so why don't you go back silently without causing any troubles and we can just leave it as it is." after saying that Tatsuya thought, 'following the anime cliché these men will now start to insult me and then will will then spout some shit about killing me and all and taking Kuroka along with them.'
The devils heard him and snorted. Tatsuya just sighed and thought, 'Here it comes'.
The leader then came forward and said, "Human you think you are some tough shit or what."
"Yeah you are just a worthless Human."
"Why would we follow your orders human."
"Yeah we can kill a human like you anytime we want."
"You humans are just like some slaves to us devils."
"Yeah Human and after taking your worthless Human life we will take that stray devil with us."
"We can even have some 'fun' with her before killing her as well."
Tatsuya who heard them speaking nonsense looked at them blankly and said, "Aren't you guys saying 'human' a lot." The devils looked at eachother and then looked back at Tatsuya and said, "Yeah, so what?" Tatsuya looked at them with a deadpan expression and said, "Nothing."
He then looked at them lazily and said, "you guys think that you can kill me easily because I am a 'worthless human'."
The devil leader who heard him grinned and said, "Yeah we can kill you anytime we want." Tatsuya sighed and said, "I am not in the mood of this but whatever-" He then looked at them seriously and said, "I will show you the technique of a real worthless human."( ANY GUESSES ON WHOSE TECHNIQUE HE WILL USE?)
Tatsuya then started walking towards them and stopped after a while such that there was some distance between them.
The devils who saw him started laughing and said, "What are you scared of us, want to go back to your mommy." and then started laughing louder.
Tatsuya then took a deep breath and then took a stance. He then looked at his opponents and suddenly shouted, "WOLF FANG FIST!!!" and started attacking them at inhuman speed.
The devils who were laughing were suudenly attacked and got serious. They wanted to counterattack him but he was too fast for them. They could only helplessly see themselves and their comrades getting flown away by the boy whom they had underestimated.
After all of them were flown away Tatsuya stopped and said in a dissapointed tone, "As expected some of them are still alive even after I put a bit of strength in my attacks."
As he said that the devils who were still alive started getting up looked at him with rage and said, "we will definitely kill you for killing our comrades you brat." and started firing magic at him.
Tatsuya who saw the attacks coming towards him just slapped the projectiles away with the back of his hand. He then looked at his opponents and suddenly got an idea and thought, 'well let's test 'that' out while I am at it.'
Tatsuya then took something like a handle and held it and said, "let's check this baby out." He then moved his hand to the side and said, "Neo Ser Veresta activate" and then a sword with a purple energy blade materialized. Tatsuya admired his sword and thought, 'Though it looks like a normal Ser Veresta, it actually is made by combination of swords. It has of course the Ser Veresta (Asterisk war), Fujjin (World trigger), Organon (World trigger), Yamato{not the devil trigger though only the space and time manipulation}(Devil may cry) and it can even alter its size and form.'
The others who saw the sword were surprised but not much but there was feeling of dread coming from the sword. Tatsuya then held his sword and moved his hand said, "now let the party begin" and then started running towards his opponents.
The devils who saw him running towards them started to take a defensive stance but some of them were late and were instantly cut by his sword. Tatsuya stopped and looked at his sword and said, "it cuts vey easily and smoothly, I LIKE IT!!!"
Suddenly some of the devils attacked him with a sword and he blocked them with his sword and said with an amused tone, "ho~ trying to copy me, I am so flattered." But his tone changed immediately to serious and he said, "But that will still not be enough." He pushed them back with his sword and then suddenly the blade of the sword turned green and he said, "FUUJIN".
As soon as he said that multiple very long green blades came out from the ground and slashed at his enemies cutting them with ease.
All the remaining devils who saw that were frightened beyond comprehension and wanted to runaway but Tatsuya looked at them with a huge smile on his face and said, "you. can't. escape." and held his sword up and the blade of the sword turned white and he shouted, "ORGANON".
Various blades materialised around him in an orbit with him being at the centre. Tatsuya then looked back at his opponent and said, "Bye" and the blades started revolving very fast cutting all of them quickly and silently.
Tatsuya then deactivated his sword and then looked at the handle and said, "This is amazing, but I was still not able to use the last ability. Oh well the time for that will come as well." and then stored it back.