Сасаки Юка

She is a third year middle school student who works for TKBM as a seer since she is the owner of Prince Shōtoku's Future Guide. In the original timeline, she was eventually killed by Joshua. After Seo Joo-Heon destroyed her relic, she now lives a normal life and became the manager of Seo Joo-Heon's Fan Club which secretly consists of talented female relic users of all ages and backgrounds in order to compensate for a lack of manpower in Seo Joo-Heon's tomb raiding team.