Рёко Сибуя

Bun-san is more serious compared to Kamo-san. He is more of a brotherly figure contrasted with Kamo-san's fatherly nature. He accepts that Tsukasa is very capable of the position of seisai. He sucks at using his gun (according to Tsukasa) and is also Ryuji's main chauffeur. He's not fond of children. Both he and Kamo-san are one of the few people who know of Tsukasa's true gender and her ties with Wakasa.