Y/N is an Idol but Y/N doesn’t realize that their best friend since childhood was secretly obsessed with them, stalking them and taking pictures of them. But Y/N doesn’t realize that they also like her. Rosie was so gentle and kind infront of Y/N but at night she’s completely different, always following Y/N tours but when will rosie confess to Y/N ? And will Y/N accept her the way she is?