13 books • 2 series
Crystals II: 2nd Battle of the Titans: Clash Between Hypercosmic and the Supernatural (Celestial Battle) (Crystals)
Krystalloi II: 2h Titanomaxia: Sygkroush Yperkosmiou-Yperfysikou (Ouranomaxia) (Krystalloi)
Crystals I: 1st Battle of the Titans: Clash between Vacuum and the Hypercosmic (Creation) (Crystals, #1)