The Master's Great Treasure (Western Crossover)

Portgas D. Luna drinks herself into oblivion in Gotham. No matter how handsome a man is, he can't beat a good drink. If she hadn't had a one-night stand with Brucey and gotten pregnant, she probably would have drunk herself to death. Luna: "I want my child to be born into this world happy, with their parents' love and blessings." Brucey: "If I'd convinced you to give up the baby..." Luna (*^▽^*): "I'd kill you, then tell the kid their father died of a terminal illness." P.S. It's an old trope, but she won't run off with the baby, and she definitely won't hide her pregnancy from Brucey. The heroine is Ace's younger sister. She wants the baby to be loved by both parents, but whether they'll marry is still unknown. So the Caped Crusader will watch his child be born, watch his child go from babbling to taking their first wobbly steps, and finally grow up (set sail to become the Pirate King, crossed out).