The series is about a severely tormented, abused and suicidal high school student named Aya, who gains the ability to become a magical girl through a mysterious website.

An anime television series adaptation produced by production doA aired from April to June 2018.

Aya feels as though she had somehow killed them, and is confused to find herself with longer red hair and blood flowing out of her eyes.

Tsuyuno teaches Aya about the power she has acquired and the physical changes it brings on to her body.

[5][6][7] Akita Shoten collected its 139 individual chapters in sixteen tankōbon volumes, released from March 7, 2014, to October 8, 2019.

[26] The series premiered on MBS, TBS and BS-TBS on April 7, 2018[a] and is directed by Tadahito Matsubayashi at production doA, with Takayo Ikami writing the scripts.

[32] The English language version of Mahō Shōjo Saito (Magical Girl Site) has received various reviews from critics.

Brittany Vincent from Japanator compared the series to Puella Magi Madoka Magica, calling the former "much darker".