Takumi Sumino leads a quiet, unremarkable life in the Tokyo Residential Complex a place where routine rules and danger is unheard of. But that peaceful existence is shattered when bizarre, monstrous creatures suddenly descend upon the city, plunging it into chaos.
In the midst of the madness, Takumi encounters a mysterious being known as Sirei, who offers him a terrifying gift: the strength to protect the people he loves. The catch? He must plunge a blade into his own heart.
When he awakens, Takumi finds himself at Last Defense Academy a secluded institution surrounded by a surreal wall of unending, ghostly flames. He’s one of 15 students conscripted into the Special Defense Unit, a team charged with holding the line against grotesque invaders for the next 100 days.
As the days tick by and the threats grow deadlier, each student must confront their own fears and decide what they’re willing to give up to reclaim their stolen futures and to protect what remains of their world.
The battle begins.
100 days of survival, sacrifice, and despair await…
System Requirements
Minimum:
- Requires a 64-bit processor and operating system
- OS: Windows 10 / 11
- Processor: Intel Core i3-7100 / AMD A10-7850K
- Memory: 8 GB RAM
- Graphics: NVIDIA GeForce GTX 660 / AMD Radeon RX 560
- DirectX: Version 11
- Storage: 32 GB available space
Recommended:
- Requires a 64-bit processor and operating system
- OS: Windows 10 / 11
- Processor: Intel Core i3-7100 / AMD A10-7850K
- Memory: 8 GB RAM
- Graphics: NVIDIA GeForce GTX 950 / AMD Radeon RX 470 / Intel Arc A580
- DirectX: Version 11
- Storage: 32 GB available space
Support the developers: The Hundred Line Last Defense

