C45 Tendrils

After over a week of diligent efforts by Chu Yang and Soong Cheng, they finally unearthed some clues about Gu Panpan's brother. It appeared that upon enrolling in the school, he had become a completely different person.

He was unusually irritable when speaking to others, with the sole exception of his sister, Gu Panpan, his only family member. To everyone else, he was consistently short-tempered