Maha is the sole heir to a major trading company, though she never got to claim that inheritance. Her parents' trusted right-hand man betrayed them all—he murdered her parents and seized the business, forcing Maha to run for her life. She ended up in Milteu, where she scraped together a living by gathering other orphans and street kids, then organizing tours for travelers. It was a decent setup until a local noble decided they'd make better profits selling her and her friends into slavery.
Lugh showed up and changed everything. He was undercover in Milteu working merchant business under an assumed identity—Illig Balor—and he bought Maha out of slavery. He had her formally adopted into his merchant family and made her his right-hand woman. Over the next couple years, Lugh trained her as an assassin's assistant while she learned to run his expanding cosmetics and chocolate operations, plus his information network. Fans often note that she proved herself genuinely skilled at both—smart enough to handle the business side, but tough and agile enough to keep up with Lugh's other work.
As time passed, Maha fell in love with him. She's said something along the lines of: "At first we admired you as our great older brother. But as we got older, how could we not fall in love with the best guy around?" Lugh initially kept his distance, worried about taking advantage of her. But Maha wasn't having it. She pointed out that he was being ridiculous—nobles taking on mistresses was standard, even encouraged. She basically called him out for applying his own moral code where it didn't belong. Eventually, he stopped fighting it.
Content compiled by AnimeList.moe from publicly available sources.