This is Romero's first album with her own label, VK48 Music. She has moved from R&B, pop and jazz influences to pop-punk pop rock music, although she still performs her old hits in her live performances. The first single released from Serotonina was "Sería Imposible".
Romero's transition to pop-punk pop rock music with her debut album on VK48 Music signifies a shift in musical direction, while still maintaining her older hits in live performances.