Since the enchanted blades seem to represent what kunishige "thinks" about something, how does it make sense for the other blades ? Did he fantasize about the clouds, own a crow, have a flower garden, or frequent a night house?
Red "aka" absorbs so "attracts good fortune" Black "kuro" wards a slash so "wards off evil" Three-coloured "nishiki" acts as a cloack, "totally amazing"