Syuhei Tsuyuki

is a deputy director for C3.Tsuyuki's father was in C3 but was killed by a vampire. It is implied that this vampire is Shamrock. She says that he still holds a grudge. His father used to work with Shamrock while in C3 and Syuhei met him when he was younger, but until recently he appears to have forgotten this.While Tsubaki's subclass attempt to escape C3 as it is collapsing, Shamrock heads to a control room on the third floor. Syuhei finds him communicating with Higan and shoots at the vampire, missing. Syuhei identifies Shamrock as a former member of C3 due to Shamrock's knowledge of the system. Shamrock then tells Syuhei that he looks just like his father and thanks Tsubaki for an opportunity to kill him "again," referring to his father. (You're female, his wife, your name Julie. Work for C3 on the field. You go into his office to tell him that you quit and tell him you're pregnant, you just found out)