Marry Kozakura (小桜 茉莉 Kozakura Marī) is the fourth member of the Mekakushi Dan. She was designed by Wannyanpu. She is the daughter of Shion, as well as the granddaughter of Azami and Tsukihiko.

Marry is generally extremely shy around people and can barely stay calm around new acquaintances. Similar to Shintaro, Marry is an extreme hikkikomori, which means she stays at home at all times and therefore has little to no stamina. Because of this, Marry tends to be very clumsy, as shown when she spilled tea on Momo[8] and broke the glassware, and similarly when she accidentally flung the handheld massager towards the terrorist leader during the incident in the shopping center.Due to the fact that she had to spend most of her life by herself, she treasures her friends from the bottom of her heart and cannot live without them being around anymore. This strong affection is the main cause for the use of her powers during the story, as she uses them to prevent the loss of her friends by death.[9][10]