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?!

(Source: Seven Seas Entertainment)