[Western Fantasy] Beneath the Light

Cynthia was born into poverty, but the overwhelming amount of light within her propelled her to the top. She was chosen as a Saintess of the Temple of Light and one of the candidates for the position of Pope. But because her aptitude was so high, she couldn't control her magic. She was ordered to speak less to reduce the risk of accidents, and was stifled into becoming an ice-cold queen instead of a lively girl. The only ones she could talk to without restraint, without causing terrible consequences, were the gods. Grateful for what she had received, she thought the God of Light was the most perfect deity. So she began telling the statue everything she wanted to say each day, and before long, their conversations had won the deity's heart. * Others: May I borrow your divine light? The God of Light grants them a ray of light, cleansing an inch of darkness. Cynthia: May I borrow your divine light? The God of Light grants her a ray of light, cleansing... an entire country of darkness. Everyone: ... Cynthia, righteous as can be: My God is just. This is the benefit of having no selfish motives and believing wholeheartedly in the deity! Everyone: … * Cynthia: All glory belongs to my God. Claist: All the glory of the heavens belongs to my beloved. * A chaste God of Light who has been unmoved for millions of years but falls in love after one conversation x a true Saintess who devotes herself to the gods and remains unmoved no matter how she's flirted with 1. Both are virgins 2. More or less a female lead's rise-to-power story