Hellish Heat: We Traded Deadly Beast Mates

When the extreme heat wipes out the world, my sister Sophia snatches my loyal fire phoenix and forces me to take the cruel ice serpent instead. We reborn on the day we got our beast husbands, and this time, I let her have what she craves most. Little does she know, the icy serpent feeds on human blood and brings endless pain. What will happen when her greedy choice backfires?