Rejected by My Phoenix, Claimed by Twin Serpents

After her S-rank phoenix abandons her in a life-or-death mission to save her sister, Lila finally ends their bond. She chooses Silas, a mysterious serpent familiar, and unexpectedly takes in his twin brother Cassian as well. As the twins give her the loyalty and affection she never had, her arrogant ex begins to regret everything—only to discover that Lila and her new familiar are far more powerful than anyone imagined.