During his time in China, Kousuke Houji was involved in the destruction of the gang Chi She Lian. Among its members was Yan, the older brother of Tatara, the ghoul that would become Aogiri Tree's second-in-command.
Upon realizing that he was facing Houji's subordinate, Tatara demanded to know whether Houji had Yan.
Powers and Abilities
His exact abilities are unknown, though Houji stated he was a ghoul of immense strength. Fifteen Special Classes and thirty Associate Special Classes were needed to kill him, and that over a hundred ghoul investigators were killed in the process. Houji stated that Tatara's kakuja looked just like his brother's, implying he developed a kakuja.
After his brother's death, Tatara came to bear a grudge against Houji.
- It was heavily implied Tatara inherited his mask.
- Yan's name translates from Chinese to mean 'flame' - likely a reference to the fact his kakuja abilities are the same as his brother's.