Yuji and Yuriko's peaceful life shatters when an old diary belonging to Yuji's great-uncle Sadaichi, who died in the war, is discovered. The pages are full of an obsession with life... and one strange phrase: "I want to devour the bird—Hikuidori." From that day on, eerie phenomena start to haunt those connected to the diary. As the nightmare deepens, a strong will to live—once buried with Sadaichi—begins to twist the past and bleed into reality.

“令和最卖男团”Snow Man携手神秘“第十位成员”，踏上一段难忘的旅程。
看他们远离舞台与日常工作，从冲绳出发一路向北前往北海道。
无脚本．零设限．百分百Snow Man，还独家收录未公开片段。

When Lord Murashige rises up against the tyrannical Oda, he finds himself besieged within the walls of his own castle. Isolated, he is confronted with a series of mysterious crimes that shatter the fragile order of his court, plunging the fortress into fear and suspicion. With Oda's army closing in and a traitor hiding among his ranks, Murashige is forced into an uneasy alliance with Kanbei, a brilliant and dangerous strategist held prisoner in the dungeon, as he must outwit his enemies and uncover the truth before time runs out.