Keiki High's cultural festival is right around the corner! After Tsumiki's class decides to host a cosplay cafe, she and Yutaka scramble to finish sewing their costumes in time. But when Mirei Hebizono, a medusa, battles her constant fear of accidentally turning someone to stone and Tomoe Mokuri, a spiderlike mythfolk, struggles with her painful past, Tsumiki and Yutaka realize they need to focus on something more important than the cultural festival--their friends!