I totally forgot the title but the story is about taengsic and taeyeon is sleeping with jessica to earn money to support her younger sister....the younger sister is either yoona or hayeon i think and then throughout the story jessica abuse taeyeon body when taeyeon keep sleeping with her only for her money but she sisnt know its for her younger sister. All i know is that yoona/hayeon knows krystal and is close to her and told stories of how taeyeon her sister works hard everyday to ea