Ichigo Aika: Zatsu de Namaiki na Imouto to Warikirenai Ani Season 1

Kouta's step-sister from Dad's remarriage was a hardcore gal, the complete opposite of him...!

Even after moving in together, Aika keeps bringing guys home and doing whatever she wants, driving Kouta crazy. But after a certain incident, she starts demanding hugs from him, and more...!?