Shinobi only existed to kill Kokoro.
She's in hell now, so no more youma.
Meaning any future shinobi are just there out of spite, since the stupid set of rules was there to kill demons that no longer exist. So following these stupid self-destructive and esoteric processes no one actually gets is just autism.

>>717143967
Look at all those Senran games from the 2020s like... Kagurun.