Aunty Since Little

Junko Satoya, 28 years old, bank employee, no boyfriend. On her days off, she helps out at her parents' teishoku (set menu) restaurant. She takes good care of her family and was nicknamed "Auntie" when she was little. Her mother coddles her younger brother but depends on Junko for everything. In order to escape her mother's gravitational pull, Junko decides to live on her own for the first time...? This spin-off of Working Pure has become a very popular series!

(Source: Kodansha, translated)