Ouchi e Kaerou(2007)

Ouchi e Kaerou

The calm composed honor-student, Satomi has always stated his dislikes about Keiko but meeting accidentally at a preschool, Keiko makes an unexpected connection that is found between having to look after her younger brother as Satomi does with his younger sister. This leading to Keiko being able to speak with Satomi normally, to coming to the point of helping Satomi who is poor with housekeeping...!?

(Source: Intercross)

Includes oneshots:
Ore-sama Housekeeper
Digital Honey