Akase Miku, a member of the heroic warrior team Chia Knights known as Chia Ruby, has been fighting against the evil organization MADD. Her latest mission is to investigate a massage parlor secretly operated by MADD. Rumors claim the parlor uses malicious methods to turn female customers into mindless puppets. Miku goes undercover as a client, but during the massage, she finds herself paralyzed and unable to move. Her captors discover her extreme sensitivity under her arms and along her sides. Once her cover is blown, Miku is subjected to intense, merciless torture focused on these weak points. Will Chia Ruby's pride and conviction endure this torment? [BAD END]