Right before summer vacation, a "forbidden game" is secretly played at a high school. After some students take part in it, their ordinary days begin to change, and before long, a "certain incident" occurs. Taking the situation seriously, the school brings in a counselor, Koharu, to provide mental care for the students who witnessed the incident. However, one of the students who played the "game" turns out to be Koharu's sister, Nanami. One by one, the students are drawn into bizarre phenomena.

本片改编自同名小说，以茨城县的高中2年级学生溪本亚纱（樱田日和 饰）、东京涉谷的中学1年级学生安藤真宙（黑川想矢 饰）、长崎五岛列岛旅馆的女儿高中3年级学生佐佐野圆华（中野有纱 饰）为中心，讲述了在疫情期间上学和社团活动受到限制的2020年，利用远程会议同时挑战天体观测比赛“星际竞赛”的全国初高中生的模样。

There is an ancient prophecy shared amongst the kingdoms of Chikyu- 2,000 years after their fall, the Territorial Empire Bugnarok will once again rise up to kill all humans. However, five kings and their guardian deity, King-Ohger, will stand up to face them. This is the story of kings who will defend Chikyu, as well as a coming-of-age story for one young man who will achieve kingship henceforth.

2024 Japanese film

2023 superhero TV series