Newtsuki is a main character, and member of the literature club from Croaki Croaki Literature Club. She is also an amphibian replica of Natsuki, who the protagonist hates. She is a female vermilion sunset colored newt. She even makes earthworms covered in vanilla frosting similar to Natsuki's cupcakes.
Newtsuki is a vermilion sunset colored newt with yellow eyes and black pupils.