He Drowned Me, I Rose with Fire

In a past life, Vesper pitied a dying snake, Finn, and spent everything to awaken his ancient blood. At their soul-bond ceremony, Finn became a giant serpent, summoned a tidal wave that drowned the school, and fled with Camille. Reborn, Vesper chose a baby phoenix, Rhys, and bonded via soul contract. They trained and conquered rifts, growing powerful. Finn, also reborn with memories, begged forgiveness, while Camille secretly sent a griffin to kill them. In the end, Camille killed Finn herself;