 He first appears during Shūrei and Suō's investigation of counterfeit currency and artwork, posing as an official looking for a position in order to join Shūrei and Suō's investigation.In truth, he was actually sent to monitor and report on Shūrei's actions.Seiga is an ambitious and cynical man who does not think highly of Shūrei, particularly because of her idealistic outlook towards working for the government, and he often harasses her.