@twinklecake
Transparency / colourless / is the robot MW. ( most colourless cards are artefacts or artefact creatures like robots and golems )
Red is the werewolf who killed the black sisters with his goblin/orc army.
Red werewolf cards are actually a thing in magic the gathering btw, there was a whole expansion made around transforming cards where a lot of them were vampires or werewolves )
Most werewolves were green, but almost as many were red with a small number of black werewolves ( black and blue transformation cards were mostly vampires and science abominations. )
Whites were monster hunters or town guards who defended the cities from the other colours´ monsters at night.
Example of transformation cards.
@Winberri
@Fug
@Legion_01
@Wolvenworks
@FgoSegul
There seem to be 29 chapters of this manga and we are at 11 now. (the last chapter came out a little before the new year from what I can tell)
So it might not have been axed as much as it was rushed unnecessarily from the start. ( assuming the story is actually finished, I have not read the raws myself)
But again, some might call that being axed anyway so .... eh.