Gu An'an's older brother who is an extreme siscon devoted to Gu Wanrou. He has a bond with Gu Wanrou built over more than a decade. He nearly strangled Gu An'an to death in a fit of rage after witnessing what he believed was Gu An'an pushing Gu Wanrou. He publicly declared that Gu Wanrou is the only sister he recognizes and ordered Gu An'an's belongings to be thrown out. He was completely biased against Gu An'an from the moment she was brought home.
