If you already own the game (via Steam) but lack hard drive space, try these legal compression techniques to reduce the footprint closer to 15GB (though still nowhere near 100MB).
If your PC has less than 50GB of free space, it physically lacks the hardware to render the particle effects of a Susano'o arrow or the physics of a Rasenshuriken.
If you saw a video or site claiming “100MB PC – Full Game,” that is . Do not download it.
Most websites promising a 100MB "highly compressed" PC version are not providing a functional game. Instead, these files often pose serious security threats:
"Looks like it's back to browser games," he sighed, slumping into his creaky chair.