Lander. Liminal Sky: Oberon Cycle, #2

The world needs saving, again. Xander and Jameson thought they'd fulfilled their destiny when they brought the worlds of Oberon and Titania back together, but their short-lived moment of triumph is over. Reunification has thrown the world into chaos. A great storm ravaged Xander's kingdom of Gaelan, leaving the winged skythane people struggling to survive. Their old enemy, Obercorp, is biding its time, waiting to strike.
And to the north, a dangerous new adversary gathers strength, while an unexpected ally awaits them. In the midst of it all, Xander's ex Alix returns, and Xander and Jameson discover that their love for each other may have been drug-induced. Are they truly destined for each other, or is what they feel artificial? And can they face an even greater challenge when their world needs them most?