You can find official versions of the game through the following platforms:
The "Immortal Senpai" achievement was updated to require a run without using any "easters" (cheats/exploits). Bug Fixes: download-saiko-no-sutoka-v2-2-8
Available on the Google Play Store and the App Store . Saiko no Sutoka by habupain - Games You can find official versions of the game
Available for purchase on Steam or itch.io . download-saiko-no-sutoka-v2-2-8
Corrected a bug where Saiko could sometimes phase inside office desks.
Fixed an issue where Saiko would act strangely near the exit door.