Complex sentence: Similarly, Nerine who is also a herione, is reserved girl with a beautiful voice and a capable user of magic who also comes to the human world to be a marriage candidate for Rin as the daughter of the Lord of Devils.
Split into simpler sentences: Similarly, Nerine, who is also a herione, is a reserved girl with a beautiful voice and a capable user of magic. She also comes to the human world to be a marriage candidate for Rin as the daughter of the Lord of Devils.