Musa is Alfea's resident empath, with a special ability to feel all of the emotions of everyone around her, keeping her from being able to focus on her own feelings at first. From the beginning, Terra tries to establish a friendship with her, but Musa finds it difficult to give into connections, preferring putting on headphones than actually having to feel all of Terra's insecurities and doubts.
Soon enough, Aisha makes it so that she strikes up a connection with Terra's earth fairy brother Sam, who has the ability to phase through walls and objects. Their relationship blossoms, and they form an intimate connection, although Musa is scared of being found out by Terra. However, once she fesses up, Terra thinks nothing of it and is happy for them. When Sam is trying to survive his attack by a Burned One, she takes on his pain to give him some peace. Along with the rest of the friends, Musa also helps to defeat the Burned Ones, and goes with Bloom to California while Rosalind wreaks havoc on the school.