Chuumon no Ooi Mahoutsukai: Keiyaku Hanayome wa Onedari Jouzu na Saikyou Majutsushi ni Dekiai sareteimasu!?

"I don't want to get married!" The selfish son of a viscount proposed to Chiara, the daughter of a jeweler, and she ran away. When a commoner is proposed to by a nobleman, she has no right to refuse. After desperately fleeing from the son who was pursuing her, Chiara finally arrives at a church where she meets a handsome boy named Snow. He says he is looking for a husband to participate in the ceremony as an adult nobleman. Encouraged by the bishop to marry him, and cornered by the son, Chiara decides to marry Snow, even if it means getting divorced --!? (Source: Ichijinsha, translated)