Ema Mizunami

First appearance in Chapter 73. A first-year student at Motosu High School. Before entering high school, they met Ena at Fujikawa Park while walking with Chikuwa. They requested their parents to buy a tablet, paying half the price as a gift and borrowing the other half, to pursue their hobby of drawing. After entering high school, they started working part-time at the Caribou outdoor goods store near Minobu Station, introduced by Rin, to repay their parents. They reunited with Ena at Motosu High School's library, meeting Rin and Nadeshiko for the first time, and described the seniors as "strange seniors."

In Chapter 88, when Nadeshiko was planning a camping trip during Golden Week, they suggested Nozori Lake in Gunma, recommended by Ibigawa, a colleague at Caribou. From Chapter 90, they joined Nadeshiko and Ena on a camping trip to Karuizawa and Gunma.