Complex sentence: His fiancee, Canary, was seduced by Kaito and quickly fell to her deathbed, in an attempt to save her Raven gave Kaito one of his eyes, as the latter demanded, but Kaito quickly fled with it.
Split into simpler sentences: His fiancee, Canary, was seduced by Kaito and quickly fell to her deathbed. In an attempt to save her Raven gave Kaito one of his eyes, as the latter demanded, but Kaito quickly fled with it.