Neisen

Background
Neisen, a shopkeeper, that Satou briefly becomes acquainted with when the latter is fascinated and buys the learning cards Neisen created. Neisen would later become amazed and inspired when he finds out his unprofitable learning cards has spread to an orphanage, due to Yuri's acquaintance with Satou (as she's from the same orphanage). He then aspires to spread the learning cards across Shiga Kingdom not just in Seryuu City.