4日後に死ぬ！
Death prophecy (Death in 4 days!) ）
The protagonist has been told since childhood that he will die at 4:44 a.m. on April 24, and the game's story revolves around how to escape this prophecy.
Kotodama (Death in 4 Days!) ）
The abilities used by the protagonist; The author sets the conditions for triggering the event to first clarify it.
Samezaki
Ari Samezaki: "I'll die in four days!" He is the author of the series.
Linne (Die in 4 Days!) ）
A cross-dressing male character introduced by Samezaki in the production retrospective.
Tokino (Die in 4 Days!) ）
Appears in CASE 3.5, related to the protagonist's process of regaining memory.
Chiharu Himuro
CASE 2's partner, actively participating in the investigation of the frozen corpse incident.
Karma (Death in 4 Days!) ）
A cross-dressing male character introduced by Samezaki in the production retrospective.
Sakuragi (Die in 4 Days!) ）
Facing a protagonist with a death prophecy, he can use kotodama after uncovering the event.
Mika (Dead in 4 Days!) ）
CASE 3's companion, who investigates the cursed tool group with the protagonist.
Emma (Die in 4 days!) ）
CASE 1's companion, involved in the protagonist's investigation as a vampire.
Sara (Dead in 4 Days!) ）
Connected to the protagonist and the detective agency, CASE 4 revolves around her.
Dead in 4 days!
"Die in 4 Days!" is a free strange detective novel game developed by Samezaki. The protagonist faces a death prophecy received in childhood and must work with partners to investigate the case and change his fate four days later.