Hide Tachikawa (立川 英 Tachikawa Hide) is a member of the newspaper club and takes photos for them.
Hide is a very happy person who loves his new stepmother Maria and stepbrother and will do anything for his friends and family. He was very heart broken when he discovered that his new family was apart of a Cult.
Hide is a 2nd year and a member of the Newspaper Club. He seems to be most naive and the least intelligent of the Club, but he tried to help Fujimaru in anyway he can. He lives with his Father, Stepmother and stepbrother. It turns out that his stepmother and her brother are members of the terrorist cult. He dies after learning of the stepfamily's secret affiliations, due to being infected by the "Bloody-X" Virus by his Step-mother. It is presumed his father was shot by his stepmother, in order to clean up loose ends.
- He is played by Masahiro Hisano in the live action drama.
- He is 16 years old and a Sagittarius.
- He is 156 cm tall and his blood group is O.
- His favorite food is hamburgers and fried prawns cooked by Maria.