From Shinmakoku Scanlations :

Shimizu Kaname lost his parents and looked for a job, then was accepted in an accounting company. When the company manager, Kawakami Shinobu, offered him to live in his house, he agreed since he had nowhere else to go. Manager Shinobu was great at work but very bad around the house. Kaname didn't mind helping with house chores, but the main reason that Shinobu offered the place was because Kaname reminded him of his late brother, Makoto. Would Kaname be living under Makoto's shadow? And what happened between the brothers in the past?