
nvm, already found it. it's on chapter 113.
A boy dying from poison, Lee Sa-young who used poison. A boy whose records were erased by Prometheus or some other hand, Lee Sa-young who escaped after being a test subject of Prometheus. A boy who tried to smile with narrowed eyes, Lee Sa-young who smiled with narrowed eyes.
‘It can’t be.’
Cha Eui-jae looked at Lee Sa-young with confused eyes. At that moment, Lee Sa-young smiled. His eyes narrowed, shining like a child’s, waiting for the moment to open his prepared gift.
‘This is strange.’
Cha Eui-jae swallowed countless words.
‘This is too convenient…’
Miracles like this don’t happen to Cha Eui-jae. He knew that. He had given up expecting miracles long ago. Yet, even though he kept telling himself it wasn’t possible, he barely managed to utter a single word. His voice cracked.
“…Is it you?”
A step closer came the black boots. Only a very narrow space remained between them. Lee Sa-young extended his hand. Cha Eui-jae, as if entranced, took that hand, just like he always did eight years ago.
The black hand gently pulled his hand to Lee Sa-young’s cheek. The warmth radiating from his cheek was soft. It was starkly different from the rough texture of bandages.
Lee Sa-young slowly rubbed his cheek against the palm. The gloved hand covered the hand resting on his cheek. A low voice whispered.
“Yes, Hyung.”
BYE, I'M SOBBING

https://mentoltrans.wordpress.com/the-hunters-gonna-lay-low/ the current chapter should be around chapter 71-72 in novel. Go and read it ヾ(☆▽☆)
I'm on chapter 108 on novel. when will euijae know that the boy he saved from the rift is actually sayoung?