Kyou kara, Keiyaku Kazoku Hajimemasu

Hinako, a high schooler, is left alone without any relatives to take care of her after she lost her beloved mother. Overcome with sadness, she agrees to be a live-in employee at the handsome CEO Yukihito's house after a series of events. To keep up appearances, Hinako ends up getting married to Yukihito... but he actually has 4 children?!! A heartfelt story about a couple with a complicated past, along with their children’s strong personalities. Source: MU