つるぺた★はにゃぁん

Protagonist, Akinose Souji, is the son of the head of the world-renowned Akinose Group, a wealthy tycoon. But one day, his life becomes unexpectedly lively when twin witches, Ririka and Erika, along with a maid and an android from the group's staffing service, arrive at his home. All of his new housemates are cute girls. They are cheerful, innocent, and smile at him with pure, untainted eyes. Gradually climbing the stairs to adulthood, the girls' dazzlingly candid figures. A sweet daily life awaits with these girls who seem to bring about a blissful pleasure in front of you!

[Translated from Getchu]