Ayato Kirishima

Ayato and Yusha met just as he was looking for a place to live. Surprisingly, he immediately trusted her, which is very rare. After Ayato joined Aogiri Tree and moved to the 11th ward, they lost touch.
Ayato, as the executive director, was tasked with bringing Ken Kaneki into the organization. They sensed in him the potential of a "One-Eye"—a rare half-ghoul who could make an ideal soldier or test subject.
Ayato burst into Anteyko, demanding Kaneki be brought to him. Naturally, his sister stood up for the other man, and they began to bicker.
Yusha, hearing the noise, went to see what was happening. She descended the stairs, but when she saw Ayato, she abruptly stopped halfway and stared at him, her eyes wide with surprise. She clearly recognized him.
Ayato instinctively turned at the sound of footsteps. He froze and stared at the stairs, dumbfounded. "Why is she with them?" he thought. For a moment, he forgot about his sister, about Kaneki, and everything else going on around him, looking at the girl with a certain bitterness.