Sakura Harima

As described on her official webpage, the feature character Harima Sakura is a G4-type Picodroid, a living entity with self-learning and evolutionary capability. She can shrink down and dive into the world of atoms, invisible to the human eye, known as the "Pico Universe." Her athletic ability is very high. In cooperation with a variety of researchers and scientists, she explores the world inside atoms with a strong sense of justice.

(Source: MAL)