Kang Kang-woo, a college student with a stout physique and bluntness. He had a secret with him, which is that he likes things that are pretty and cute. His hobby is decorating a diary! Known as the 'Strawberry Fairy' on social media, he goes directly to the stationery festival when he hears that a new sticker by his favorite artist is coming out. And soon Kang Kang-woo is found out by the writer that he is a strawberry fairy...