Fukagawa Seiji is a free-spirited student who loves painting and tells people exactly what he thinks, despite having a mysterious side. Niwa Akane, his classmate, on the other hand, is a model student who always wears a face mask. At first she doesn't like Seiji, but she is attracted to his paintings and outspoken personality. They grow close to each other and both have a secret they cannot reveal to anyone.