Close friends Mizuho Yuuki and Miko Kamiyama navigate high school life together. Miko harbors feelings for their classmate Tohru Nagase, while Mizuho stays resolute in supporting their potential romance. However, a complication arises as another student, Ai Minamizato, also develops feelings for Tohru. Now, Tohru finds himself at a crossroads, torn between the affections of these three girls.