Complex sentence: Aiolos always was a paradigm of righteousness, seen as the perfect Saint and one of the two Gold Saints who could succeed Aries Shion as the next Pope of Sanctuary and the chosen one.
Split into simpler sentences: Aiolos always was a paradigm of righteousness, seeing as the perfect Saint. Also one of the two Gold Saints that could succeed Aries Shion as the next Pope of Sanctuary and the chosen one.