The wacky days between a boy and his slime, until their end of friendship. Water, Borax and PVA glue. These were the ingredients chosen to create a perfect homemade slime. But Kotaro mixed an extra ingredient to his concoction. DEFINETELY NOT CHEMICAL X. BOOM! Thus, Puniru the slime penguin was born! Using its absolute cuteness, Puniru, Puniru and Puniru has dedicated its life as Kotaro's best friend! (End of PPG parody) 7 years later... Kotaro grown up into an 8th grader and became less interested in Puniru over the years. Puniru was failing to gain Kotaro's attraction and chose to transform itself into the most kawaii being, to regain Kotaro's attraction.