he goes back home to start learning magic from his dad for a few years and I think only Raina follows him back to their hometown. She tries the get mc's mom to teach her swordsmanship too but the mom takes it as a request for bridal training to marry Arel and insists she won't teach her anything is she doesn't do the bridal training too. Anyway, as far as I saw, Lilia is only present for the time he's in this city, which isn't for much longer I think.