CREAMY MAMI, THE MAGIC ANGEL

Posi is pink & Nega is teal

Posi (ポジ, Poji?)
One of the two cats from the Feather Star asked to watch over Yū Morisawa while she has magical powers. Her name is short for positive.
Nega (ネガ, Nega?)
One of the two cats from the Feather Star asked to watch over Yū Morisawa while she has magical powers. His name is short for negative.