Kurumi—originally code-named "Walnut," a play on her actual name—is a talented hacker forced into hiding after her home got destroyed by Robota, another hacker who was tracking her down. When her old life essentially ended, she found refuge at LycoReco, where she now lives under their protection. In exchange, she helps the group with their missions, putting her hacking skills to good use.
Content compiled by AnimeList.moe from publicly available sources.