Selena Midford is Elizabeth's older twin sister. She's known Ciel Phantomhive since they were young. She even knows about Ciel's mysterious butler, Sebastian, who is one hell of a butler and then some. Unfortunately for Selena, Lizzie is betrothed to Ciel. Selena holds a secret that threatens Lizzie's happiness and it involves Ciel. Selena keeps it hidden deep. So, when Selena meets her mysterious fiancee she's never met or heard of before, will Selena finally own up and tell Ciel she knows everything about him and Sebastian?

Ciel and Selena had seen a lot since 1889. Now it's a century later and things couldn't be better for Selena. She has Ciel. She knows Lizzie was happy to go with Grell when it was her time, and Sebastian is still a call away. Everything is perfect. That is until she sees a face from her past. A blond-haired one that reminds her the past is still very real. Selena wonders, will she be able to stay with Ciel forever like they planned?