Complex sentence: Kernel is next seen in Demon Apocalypse, sitting in a cave by a fire as Beranabus brings in Grubbs, by now 30 years has passed since Demon Thief and he only looks around 16 years old.
Split into simpler sentences: Kernel is next seen in Demon Apocalypse, sitting in a cave by a fire as Beranabus brings in Grubbs. By now 30 years have passed since Demon Thief and he only looks around 16 years old.