Sora, a dryad from the Spirit Tribe, was given the job of protecting the forest and safeguarding the Shield of Truths. She gave the shield to Rein and others after they told her it was needed to defeat the demon lord. Noticing that she is sad, Rein asks her to tell the reason. Sora told Rein and others that her younger twin sister was captured by Shadow Knight as an offering to protect their village. Rein helped her and her sister by defeating Shadow Knight. Then, Sora and Luna decided to join his party, making them his third and fourth contractual.