In the third season, there isn't a central plot like the 'Valkyrie Ghost' arc in the previous season. Instead, it presents six standalone stories focusing on the daily lives of Kazuto and his friends. Notable additions include Raine and Chorus settling in a house on Earth, individual episodes for the remaining three Valhalla princesses, and a finale where Kazuto and Valkyrie attempt to rekindle their adult relationship by embarking on a marriage endeavor.