Mana Project and Don't Panic Games have released free to download playtest rules for the official カウボーイビバップ TTRPG. That's the Cowboy Bebop RPG.
Not The End was a successful Kickstarter from Fumble GDR. You can find it on DriveThruRPG in Mana Project Studio's profile.
Knights of the Round: Academy is a narrative-based TTRPG is inspired by shonen anime.
Fumble GDR has several hundred backers for their tabletop RPG Not The End, and that's enough to make their Kickstarter target many times over.