Yuto works in a magazine company known as "Kadokava". His current project rotates around the mysterious phenomenon occurring in the city. Someone or something placed stickers with the face of Sumo Fighter throughout the city in different places. No one knows who places stickers or what is their goal, but these stickers appear in some places for some time. Yuto now needs help appraiser to solve this mystery. Search on the Internet, find an appraiser known as "Estimator Q". Her name is Rinda Rico, and she has the opportunity to appreciate anything (or anything) and solve any secret that comes to her mind. [DRCOKE]