Top student from the advanced Class A, she later joins the cooking club in high school.

The manga centers on the brothers Ryuuichi and Kotarou Kashima. Ryuuichi is in high school and Kotarou is still a toddler. After their parents are killed in a plane crash, the two brothers find themselves living with the chairwoman of the Morinomiya Academy, who herself lost her son and daughter-in-law in the same accident. The chairwoman, however, has one stipulation for the brothers in order to live with her: Ryuuichi has to work at the academy's daycare center as a babysitter.
 
(Source: Anime News Network)

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Satomi got her start in show business in 2001 when she won the "Idol Grand Prix", an idol contest sponsored by the manga magazine Nakayoshi. She became an event character for the anime "Tokyo Mew Mew" by joining the group Mew Five. She made her debut as a voice actress in 2004 in with role of Anzai Futaba from Koi Kaze, and as a stage actress a year later. She released her first single "Akeban!" in 2011. As a part of the BanG Dream! project, she also played the keyboard for the band [Roselia](https://anilist.co/staff/153170/Roselia) as the character Rinko Shirokane up until September 2018, when she was forced to quit after suffering sudden deafness twice. Before Roselia, she had been playing the piano since a young age, and previously played classical music.

Satomi's hobbies include using computers, drawing, reading, gaming and sleeping. Her favorite food is umeboshi, and she loves animals, especially cats.

(Source: BanG Dream! Wiki, edited)

After their parents are killed in a plane crash, Ryuuichi and his younger brother Kotarou are taken in by the chairman, who they never met before, of an elite academy. Ryuuichi becomes the school daycare's new babysitter.


In the OVA's story from the manga's ninth compiled book volume, Ryuuichi takes a break from the babysitter club in order to study for tests. Imitating Ryuuichi as he studies, Kotarou and friends practice writing. Ryuuichi wants to thank Saikawa, who helped him out during testing, and he nonchalantly tries to figure out what Saikawa likes. Ryuuichi makes curry for the chairwoman and Saikawa. 

The OVA also includes a special "Snow White" segment based on a story from the manga's sixth volume. The chairwoman is the Queen, and Inomata is trapped in a castle doing nothing but studying as Snow White. Ryuuichi is the huntsman who takes her to the outside. The babies are the seven dwarfs, and they run into Usaida in the forest.
 
(Source: Anime News Network)

Maria Inomata