Hajimete no Orusuban  

はじめてのおるすばん

During a chilly winter evening, a man discovers two young women-saori and shiori mizuki-appearing to be lost near his residence. over time, the sisters have grown closer to him, with one residing at his home while the other attends school. despite their initial role as caretakers for the children, their relationship with him has evolved into something more complex, involving mature events on occasion.