Complex sentence: Fuuto goes to the rooftop and is confronted by the bird again, where he sees it transform into a half-man half-bird hybrid named Garuda who claims that Fuuto is the true heir to the throne of Dhalashar.
Split into simpler sentences: Fuuto goes to the rooftop and is confronted by the bird again. He is Garuda and claims to Fuuto that he is the true heir to the throne of Dhalashar.