About the Game
Project Extreme x Despair is here! "Kazutaka Kodaka" and "Kotaro Uchikoshi" comes a brand-new adventure game!
Takumi Sumino is a totally average teenager living in the Tokyo Residential Complex, a place where every day is much like the last and nothing bad ever happens. All that changes when freakish monsters attack the town and start wreaking havoc. A strange creature calling himself Sirei appears and offers Takumi the power to protect those he holds dear... All he has to do is stab himself in the chest!
The next thing he knows, Takumi is in Last Defense Academy, a school in the middle of nowhere surrounded by a wall of otherworldly flames. He and 14 other students have been drafted into the Special Defense Unit, a team tasked with keeping the school safe for the next 100 days. How much are they willing to sacrifice to take back their normal lives and save the world from the grotesque school invaders?
The curtain rises on 100 days of war and despair...
Extreme Despair-Filled Endings
Takumi's choices will decide his future, but there's no telling what kind of consequences these decisions might have...
Defensive Battles
When the invaders attack, it's up to you to protect the school in SRPG battles.
Use each student's unique Specialist Skills to turn the tide of battle in your favor!
Free Time & Exploration
Spend time with your teammates to deepen your bonds, or explore the wilderness and ruins outside the school.
You can even use the items you find to craft gifts and get even closer to your allies!
Screenshots
7 images
Version Information
Steam Patch Notes
Official update history
Thank you for playing “The Hundred Line -Last Defense Academy-”.
The following patch has been released.
■Platform & Version
Steam 1.2.2
■Bug Fixes
・Mitigated an issue that could cause save data to become corrupted
・Fixed an issue where treasure chests may disappear during exploration
※If treasure chests are not displayed correctly, please exit and re-enter exploration
・Fixed an issue where some Korean text was not displayed
Thank you for your continued support of “The Hundred Line -Last Defense Academy-”.
Thank you for supporting The Hundred Line -Last Defense Academy-.
The following patch has been released.
■Platform/version
・Steam 1.1.0
・The patch’s release date for the Nintendo Switch version will be announced at a later date.
■Improvements
●Chapter Select
・Players can now start the game immediately before each decision making scene.
・The maximum display area of the Chapter Select menu has been expanded.
●Battle
・A new Battle Mode “Extreme & Despair” has been added.
・The auto-healing in Safety mode has been updated to occur at the end of the player's turn.
・Battles that have been cleared before can now be skipped even if they are not similar to any other battles.
・“Redo Wave” has been updated to skip any events at the beginning of a wave.
●Field
・Added UI to show which direction characters are in hallways.
・The brightness of the flash from the monitor during the morning and nighttime chime scenes has been decreased.
●Gift-O-Matic
・The player is now able to go back after selecting a gift to create. Gift creation will only occur after the player has selected the recipient.
・The player can now filter gifts by hitting the “Name” button to open the Report Card and checking a character’s Preferred Items.
・Grades that will improve by spending time with someone or giving them a gift can now be confirmed on the Report Card menu.
●Exploration
・Some story-related Exploration sequences can now be skipped.
・Random battles will no longer occur based on player selections made during Exploration.
●Others
・Added a feature to toggle on/off the message window and controls during dialogue screens.
・The cursor position will now be retained when saving and loading the game.
■Battle Balance Adjustments
▼Tsubasa Kawana
・Decelerate: Area of effect has been expanded.
▼Kurara Oosuzuki
・Craft Mounted Turret: Increased turrets’ ATK by 1.
・Craft Support Tower: Effect range of towers has been expanded.
▼Ima Tsukumo
・Twin Wing Gale: Added an effect to heal Fatigue.
・Bloody Angel’s Fist: Attack area has been expanded.
▼Kako Tsukumo
・Energy Sniper: “Inflicts Attack -3 on user” has been changed to “Inflicts Attack -2 on user.”
・Spirit Rain: “Inflicts Attack -3 on user” has been changed to “Inflicts Attack -2 on user.”
▼Moko Mojiro
・Moko Dynamite: Armor +1 effect has been added.
・Ultra Moko Bomber: ATK area has been expanded.
▼Battle Stages
・The game balance for some battles has been adjusted.
・Some boss behaviors and their skill effects have been adjusted.
■Bug Fixes
●All versions
・Fixed an issue where the game crashes when selecting “Chapter09_A_aba_099” and “Chapter09_A_abb_099” in Chapter Select.
・Fixed an issue where unique battles can be skipped even though players have not cleared any similar battles.
・Fixed an issue where saving/loading during an exploration changes the player’s moving direction and square colors.
・Fixed an issue where audio volume cannot be adjusted.
・Fixed an issue where visual effects do not show up properly during battle.
・Other minor bug and text fixes.
●Steam
・Fixed an issue where the cursor keeps moving when using the touchpad with no mouse connected.
Thank you for your continued support of The Hundred Line -Last Defense Academy-.
The following bugs have been fixed.
Patch Ver.1.0.6
■Improvements:
・For certain routes, allow skipping similar battles after clearing them once.
・Enable skipping the screen effects of morning and evening chimes.
・Reduce the button press time required to skip movies.
・Enhance the battle experience for "Chapter00_1-100".
■Bug Fixes:
・Fixed an issue where the battle does not end even after defeating a boss that needs to be defeated simultaneously with three units in the same turn.
・Fixed an issue where simplified exploration might not be possible.
・Fixed an issue where progression might become impossible in "Chapter00_0_a_036".
・Fixed an issue where progression might become impossible in battles with subtitle voice playback.
・Fixed an issue where the game might freeze during chapter selection in certain environments.
・Other minor bug fixes and typo corrections.
・Fixed an issue where the game might force close on the loading screen before the title when starting the game.
Note: If the save data is corrupted due to actions like "turning off the power while saving", the changes in options and the gallery save state will be reset.
We hope you will continue to enjoy "The Hundred Line -Last Defense Academy-".
The following bugs have been fixed.
■Contents
-Fixed a bug that caused the game to crash when loading save data saved in Chapter 15.
-Fixed the height display for "Kurara Oosuzuki " in English, Traditional Chinese, and Simplified Chinese.
-Fixed minor bugs.
We hope you will continue to enjoy "The Hundred Line -Last Defense Academy-".
We appreciate your continued support of "The Hundred Line - Last Defense Academy-".
Current Release
Build 23391396
Uploaded Aug 02, 2026
System Requirements
How to Install
HUNDRED_LINE.exe to play
Troubleshooting tips
• Run Redist/_CommonRedist installers if game won't start
• Add folder to Windows Defender exclusions
• Run as administrator
Download
Direct link available
Needed when extracting (WinRAR / 7-Zip) — not a site login.
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Download The Hundred Line -Last Defense Academy- for PC with a direct link or via torrent. Get the full version of The Hundred Line -Last Defense Academy- for free. The Hundred Line -Last Defense Academy- is a Adventure released by Too Kyo Games.