Doldam Bakkui Licentia

Illece is sold to a man she doesn't even know because of her gambling-addicted father. She eventually runs away from home and evades her father's pursuit, where she receives help from a man named Cassis. He seems familiar, but it turns out he's a boy she knew from childhood. Cassis has grown into a handsome man and shows her endless kindness, and Illece feels compelled to lean on him... but can she completely trust him?

(Source: Ridibooks, translated)