He was getting a little emotional. Here's the novel texts after Heeseong found out about Yoon Chiyoung's age:
‘…I’ll just keep calling him hey.’
However, Heeseong didn’t dwell on it for long. He had decided not to care about others’ opinions anymore. He had nothing left to lose anyway, and his exhausted heart made even his worries feel powerless.
“……….”
The painful experience of being cast out of the pack for the second time had distorted Heeseong’s heart. It was partly because he had forcefully turned away from his sorrow, but Heeseong refused to acknowledge that pain.
Heeseong stubbornly thought that being betrayed by his brother wasn’t worth being sad about. Tears welled up in his eyes as he looked at the floor, but Heeseong bit his lip hard to hold back his tears.
It was his brother who had pretended to cherish him and tried to use him. So it was right for him to only think about revenge.
Thinking stubbornly, Heeseong looked at the isolation room again. Yoon Chi-young needed to recover quickly so they could go kill Park Geon-tae. Even if not for that, he felt much more at ease when Yoon Chi-young was healthy. Thinking about revenge made his heart increasingly impatient.
As he wiped the tears welling up in his eyes, Heeseong said to Ji Yeong-bae, who was standing beside him,
“I’m going to the restroom and will be back.”
“It’s dangerous for you to go alone.”
“I want to go alone. It’s close anyway.”
Perhaps because of his experience living as a puppy, Heeseong spoke casually to Ji Yeong-bae. Ji Yeong-bae didn’t particularly mind that point, but he seemed worried about Heeseong going alone and tried to follow him.
“Don’t follow me.”
Not wanting to be caught crying, Heeseong deliberately avoided Ji Yeong-bae and went to the restroom. The restroom was right around the corner anyway
.