Fuchico on the Cup, known in Japan as 'Cup no Fuchiko', is a charming series revolving around a miniature office lady named Fuchiko who perches on the edges of cups. The series gained popularity for its whimsical and collectible nature, capturing the imaginations of fans who enjoyed the creative scenarios Fuchiko finds herself in. It showcases a blend of cute design and clever concepts, making it a beloved novelty among collectors.