Her parents died early, so Ase Yuuri had to support herself, fortunately for her, she was bought by a giant to be an osin in his family, but she was not happy here.
She always had to endure and do what this pervert asked, from masturbating with strange things to helping him satisfy his desires by having sex. And yet, when he was happy and satisfied, he even called his friends to continue torturing and humiliating her.
What a poor girl.
