A giant rock was floating in the void, and two individuals were on said rock. Both of them seemed battered and injured. Their clothes were shredded and couldn't be regarded as clothing. One of the said people was a middle-aged man with a thin moustache with very long green hair. This individual was holding a hilt of a sword in both of his hands.
As for the other one, that was a young person in his early twenties. He was kneeling on the ground, and two damaged sword blades were in his stomach. This man had very dark blue eyes relatively long black hair which went below his shoulder. This person's name was Yin Xin.
Yin: I must stop you! I will not let you play in another world as you please!
Man: Foolish child! You will not stop me. Had you come with your comrades, you might have been able, however thanks to your arrogant attitude, I had a great warmup!
Yin: YOU!
Yin stood up with shaking legs and grabbed the blades and pulled them out, then he wanted to throw them at the middle-aged man, but the man punched his chest with an open palm, sending him flying backwards. Yin almost fell off the rock, but he managed to grab the rim of the rock and slowly pulled himself back up.
Man: You were a genius... you managed to reach such heights at such a young age. It would have been better if you had joined me. You left me with no choice!
Yin dashed at the man, and before he could have reached his opponent, the man trusted his open palm forward, and a hole appeared in Yin's chest resembling the figure of a palm, and he fell. Yin vomited blood the moment he got down and couldn't breathe properly. He tried to stand up and push himself up, but suddenly all of his limbs were cut off, and he fell back down.
Yin: Bas...ta...rd!
Man: I will not kill you; I will let you bleed out; you have wasted my precious time. Bye, Yin Xin!
The man vanished and created a green explosion that pushed Yin back.
Yin: Teacher... I am sorry! I failed your expectations and was unable to avenge you!
Yin closed his eyes and was about to faint, but a blue glow appeared in front of him, and he had no choice but to look. In front of him, an old man wearing some sort of plated armour was kneeling. The person had a long beard, and his entire body was blue and partly transparent.
Old Man: My pupil, I am sorry for giving you such a burden! I know you have endured years of suffering for my sake.
Yin: T-tea..cher?
Old Man: I must apologise for putting you through so much... and... I will never be able to correct and repay what you will experience next... my pupil.
Yin: What are you talking about?
Old Man: After my death, I managed to... to go to the world where that monster is going... and I managed to create a body for you to live in and even defeat "him".
Yin: I still don't get it... Teacher, please enlighten this ignorant student!
Old Man: I am sacrificing my soul so that you can live a better life in another world!
Yin: W-wait! I don't want you to vanish comp...
Old ma: Goodbye... my dear pupil, may you live in a better world and have a better life!
Lightning struck the man, and he turned into a blue mist.
Yin: NO! TEACHER!
Yin tried to reach the mist with his stumpy hand, but the mist dissipated, and his eyes slowly got heavier and heavier till he finally closed his eyes and didn't open them anymore.