Grisaia no Meikyuu Caprice no Mayu 0

The story follows the events of Blue Lock from the perspective of the genius prodigy: Seishiro Nagi, exploring his battles and games during the Blue Lock dispute.

Meanwhile, unbeknownst to the two, the girls of Mihama uncover some torn documents in Yuuji's room. After restoring the papers, they discover the story that has formed—or perhaps broken—Yuuji into the man he is today. However, what was thought to be history has haunted him to the present, and the chains of the past begin to drag him back into the darkness...