I chose the same name that I chose in Potion Panik, Opia, so I guess these two games will forever be connected for me.
But my character in Potion Panik was a guy, so now my headcanon is that he was going steady with Mirabelle before he did some self discovery, came out as trans, and Mirabelle was supportive at first but as Opia continued his transition, Mirabelle just wasn't attracted to him anymore and they ended on good terms. He moved away and started his own potion shop in another town because working there was just too akward.