Eris Boreas Greyrat - Mushoku Tensei: Jobless Reincarnation [Tier 0] (Patreon)

Snow falls quietly as the aurora dances overhead.Eris stays close to the fire — restless, alive, impossible to tame.Winter doesn’t slow her down. It only sharpens the edge.

静かに降る雪、空に踊るオーロラ。炎のそばで落ち着かないエリス。冬は彼女を止めない。むしろ、研ぎ澄ます。

The character is adult (18+) and represented as such.