C427 Doubt
Gu Chengyu didn't object when this brat called him older brother since he was familiar with him.
However, a hint of a smile flashed across his eyes that was hard to detect. He seemed to have a bit of a pampering look, and in the end, he was still a considerate person.
Although he used to treat this kid as an imaginary enemy and even did things that he had no other choice