It was initially serialized in Kadokawa Shoten's Da Vinci book and manga news magazine from April 2016 to August 2018.

A manga adaptation illustrated by Kina Kazuharu began serialization on Kadokawa Shoten's KadoComi website in February 2025.

She selects and befriends three other girls so that they could become the shining stars of the north, east, west and south, manipulating events as part of her master plan to push the group on the path to stardom.

Written by then-Nogizaka46 member Kazumi Takayama, Trapezium was initially serialized in Kadokawa Shoten's Da Vinci magazine from April 6, 2016,[7] to August 6, 2018.

The film is produced by CloverWorks, directed by Masahiro Shinohara, and supervised by Koji Masunari, with scripts written by Yūko Kakihara, character designs by Rio, and music composed by Masaru Yokoyama.