Futago Kareshi

From Salty Potatoes:

Yuusei and Shuusei are high-spec twins that appeared in front of Haruyoshi who is poor, but he was living peaceful ordinary days until the twins became overly attached to him and going all the way!! The twins gradually invade Haruyoshi’s mind and body and gave Haruyoshi, who felt secretly alone, a place to stayㅡ. “Let’s just love each other, just the three of us”. The twins want to have xxx together?! A 3P Love Story with Rich xxx