Ai to Boukun

A story of love and family life that transcends differences and is woven under one roof between a complicated heir and a commoner girl! Ai, who is left alone at home when her father is transferred overseas, ends up staying at the mansion of her father's friend, who runs the Mikado Group. When his son, Reiji, says, "What, you're just a commoner," their new living arrangement gets off on the wrong foot. But as they spend time together, they gradually realize each other's kindness.

(Source: Ciao Plus, translated)