Episode 9
Everyone's going to the beach: the kids, the mothers, the daycare staff, and even Inomata! Kotaro is afraid of the ocean, so Ryuichi tries to accompany him on other activities. Later, Taka comes to the daycare room crying after a big fight with his brother... who is opting to punish him with the silent treatment.
Aired 04/03/2018EP 9 - Episode 9
School Babysitters
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)