Ripped using NaomiLib
https://github.com/NaomiMod/blender-NaomiLib
https://github.com/NaomiMod/games-ExtractTools

Note(s): Textures are flipped due to the UVs being upside down
Hiyoko is Yellow, Piyoko is Blue, and Hinako is Green
Tamako uses Hiyoko's textures
 
Credit isn't needed to use
(if anything, credit SEGA for making the model)