Animal Detectives Kiruminzoo(2009)

Animal Detectives Kiruminzoo is a Japanese animated series following twins Riko and Rimu Mikogami, who discover a mysterious device while searching for a runaway cat. The gadget grants them the ability to transform into "Kirumin"—a form that lets them shapeshift into real animals. Their older sister Nagisa soon learns their secret and joins their mission. Together, the three siblings embark on a series of cute, humorous, and occasionally perilous adventures as they navigate their newfound powers. The show blends comedy with light action as the characters use their animal transformations to solve mysteries and help those in need, creating a lighthearted yet engaging story about family, friendship, and discovery.