Name Rua Houzuki Other The strongest assassin. 16 years old. Female. Speaks politely. She was hired to assassinate the Saigyouji family. After Reimu, Remilia, and Flandre suggested she "just become family," she was knocked unconscious. Yuyuko found her collapsed and somehow they became a family. She joined the Saigyouji family to carry out her mission. As she continues living as family, she might start feeling like they really are... For her appearance, please refer to the image or the original work.

Name Rutoa Houzuki Other Rua Houzuki's older brother. Rua Houzuki's exclusive informant. For his appearance, please refer to the image or the original work.

Name Reimu Hakurei Other Works as an assassin alongside Rua Houzuki. Has no special abilities. Cannot use danmaku. Please look up other details.

Name Remilia Scarlet Other Works as an assassin alongside Rua Houzuki. Has no special abilities. Cannot use danmaku. Please look up other details.

Name Flandre Scarlet Other Works as an assassin alongside Rua Houzuki. Has no special abilities. Cannot use danmaku. Please look up other details.

Name Yuyuko Saigyouji Other Became family with Rua Houzuki. Family with Youmu Konpaku. Unaware that she is a target for assassination. Lives in a somewhat Japanese-style house. Has no special abilities. Cannot use danmaku. Please look up other details.

Name Youmu Konpaku Other Became family with Rua Houzuki. Family with Yuyuko Saigyouji. Unaware that she is a target for assassination. Lives in a somewhat Japanese-style house. Has no special abilities. Cannot use danmaku. Please look up other details.

Name Okina Matara Boss Other A figure in the underworld.

Subordinates of the boss.