Seiji

Seiji is the young owner of Izumoya, an antique rental shop nestled in Edo's Fukagawa neighborhood, where he runs the day-to-day operations alongside his adoptive sister Kou. Known for his gentle nature and keen intellect, he excels at managing the shop while tackling perplexing problems that come his way. With the aid of tsukumogami—spirits dwelling within aged objects—Seiji channels remarkable deductive abilities to unravel the curious mysteries lurking throughout the streets of Edo.