Kotaro is an average young boy, and like many kids his age, he enjoys the latest childhood craze of playing with slime. One day, the slime randomly turns into an adorable girl who he names Puniru. Though cute, her stubbornness and constant need for attention get on his nerves. It’s like having a goopy little sister! Just when the two settle into their not-so-normal life, the granddaughter of Kyuthi Land’s founder arrives. Can Okanega Alice and her little friend Runrune out-cute the world’s most adorable slime girl?!
Kawaii Kotaro is your average junior high school boy with an adorable slime girl for a best friend. Though her constant need for attention can get on his nerves, she’s too cute to stay mad at. What better way to spend time with such a precious companion than at the cultural festival? But it’s not all fun and games! Puniru faces off against Kotaro’s wealthy classmate, Okanega Alice, in a battle for Kotaro’s attention. And later, it’s time for some slimy holiday cheer! Finally, the tables turn and everyone’s fighting to be Puniru’s number one instead of the other way around! Now that she has the spotlight, is it everything she dreamed of, or will the needy slime reach her limit?