After leaving SabreTooth, Alexis, Obsidia and Katsa are creating their own guild. Black Eclipse. Alexis Cheney is the younger sister of Rouge Cheney, of SabreTooth; she's a Shadow Angel Slayer. Obsidia Dragneel is the missing younger sister of Natsu Dragneel, of FairyTail; she's a Fire Mage (She uses maker-magic). Katsa Fullbuster is the lost twin sister of Gray Fullbuster, of FairyTail; she's a Ice Dragon Slayer. What will happen when Obsidia and Katsa reunite with their bothers? What will happen in their new guild? And, what will happen when they face a new enemy?