The Lu family was in a mess as they searched for Kaylus. Nobody knew how she was kidnapped. The Cctv footage around the School was deleted in a way that they can't be retrieved but thanks to Valen's system, it was an easy feat.
Valen got to know how his little sister was kidnapped, however, he couldn't tell where she was taken to– the system couldn't find the location.
While the family was met with a dead end, Valen started drawing to calm his angry heart. The Lu men and SINNERs were all out, searching for her while Valen was forced to stay back. The child couldn't find himself having a peace of mind, so he channeled his anger into what he was drawing.
Once he was done, he realized he had been drawing a sword. He didn't know why, but he liked the design, so he sent the drawing to a blacksmith who made a sword from the rainborite stone as per Valen's instruction.