Fantasy Assassin in a modern world

Minato woke up a few hours after he fainted. He was brought back to his room by the clan members who found him unconscious. When he woke up he was confused as to what was happening but then he remembered how he was defeated by Fade. 

The moment he remembered Fade, Minato's rage, filled his entire being. He was now the leader of the Yui Clan, what a humiliation it was to be defeated by some random assassin that came out of nowhere and had just rose to fame. Not to mention that the assassin actually spared him. As Minato's rage was growing to an unprecedented height someone entered his room.  Seeing the Head was finally awake the member of the clan quickly knelt. 

"Clan head, I'm glad that you have awoken." 

Minato noticed the panic in the clan member's eyes. Even though he had just woken up, Minato felt something was wrong so he tried to calm himself down before speaking. 

"Tell me what happened."

"Clan head, we found the dead bodies of Yui Ling and the others in the nearby forest." 

Minato already had a feeling that would be the case but hearing it being verified was a different matter altogether. He couldn't help but gnashed his teeth after hearing the news. Those ten were the few remaining rank six martial artists their clan had, not counting his siblings. 

'Damn you Fade!' 

That was too big a loss for their clan that was already on the decline. Now not only did they lose the majority of their strong fighters when the third elder left, but now they also lost most of their high-ranking martial artists. They were now left with martial artists that were mostly at rank three and four. 

As Minato was getting a tiny bit worried he suddenly got a call. He looked at his smartphone and it wasn't the one ringing, that would mean that it was the other phone. Minato took the special phone given to him by that man and looked at it. Minato gulped as he nervously answered the call. 

"It's been a while Minato."

"Yes sir, it has been a while. I hope that you're doing well." 

"Well compared to you I guess I am doing very well." 

"Of course sir, how can a lowly ant like me be compared to you." 

"So how is it Minato, how is the feeling of becoming the head of the clan? Is it everything you imagine it to be?" 

Minato could practically hear the sarcasm from the man's tone leaking out from the phone. He felt so much anger welling up inside him but he had no choice but to push it back down. 

"..." 

"Oh, what's this is the head of the Yui Clan displeased? Even after I have helped you take over the Yui Clan you still aren't satisfied?" 

"How can I be displeased? Sir has given me everything he promised so of course, I feel extremely grateful to you." 

"No need to lie, Minato, I know everything." 

Minato felt a chill run up his spine when he heard what the man said. He was about to respond but the man spoke first. 

"The third elder of yours has left your Yui Clan and he brought with him the most talented disciples of the clan, making your clan now barely middle-tier. When your father and sister were alive your clan had a chance to become a top-tier clan, in fact at that time your clan was already at the top of all the middle-tier sized clans. Yet now that ten of you rank six martial artists are dead, making you and your worthless siblings are the only remaining high-rank martial artists in your clan. That means the Yui Clan is done for, you can longer stay as a middle-tier clan, and you'll be lucky to even get to the lower tier without being annihilated." 

Minato gulped as he started sweating a bit while his heart started beating faster. He knew that everything that man said was going to happen. 

"B-but with your protection sir my Clan can survive this ordeal. Surely as one of your subordinates, you will come and help us." 

"Oh, there seems to be a misunderstanding here. The Yui Clan was never my subordinate, at most you guys were just little helpers. I only helped you become the head of your clan because it made my plans run a tiny bit smoother. Unfortunately, you performed badly and couldn't even last a few months as the head of the clan. It was as I expected you were just mediocre. In short, losing your clan doesn't really affect me. Well, I guess that's to be expected since you really aren't comparable to your sister. If she were alive, and it was you instead that died then this would never have happened." 

Minato listened to every word the man said, in the beginning, he felt despair, but when the man compared him to his sister he felt his anger once again welling up but this time he no longer held it in. Since he and the man no longer had hope of being comrades Minato shouted at him. 

"How dare you compare me to her! How is she better than me?! Even after her death, it's still Sakura this, Sakura that, why aren't you as good as Sakura?! Tell me how is she better than me, I'm the one who's alive while she's the one dead!" 

"Hoh, finally showing your true colors... If you need to ask why Yui Sakura was better than you, then you really are a worthless loser." 

"Damn you b*stard! I did everything you said and I the honorable head of the Yui Clan even bowed his head to you and this is how you treat me?!" 

"You better look up what honorable means in the dictionary. Well, in the end, you're nothing more than a barking dog."

"Don't act so comfortable! Even if we are destined to fall, I will make sure to at least bite back at you. I'll make sure to bring you down with me." 

"HAHAHAHA! That's the most hilarious thing I heard today. You and your little Yui Clan think you have the capability to do that. Well, fine, let's see if you aren't a complete loser. Come then little doggy, come try and bite me."