Keiichi Mizukoshi

Operating a budget-friendly vintage clothing and furniture boutique near Nana’s Tokyo apartment, this former employer provided Hachi with an early job opportunity. Although he eventually shuttered his business to relocate to his hometown, his impact remains a bittersweet memory. He later resurfaces in the narrative by sending a wedding postcard featuring his bride, a childhood friend, serving as a poignant and ironic contrast to Hachi’s own romantic struggles during that period.