Kirara Fuwa, the prominent figure in the social hierarchy, is struggling with her weight gain. Amidst a heated rivalry with a girl vying for her throne as the class queen, Taichi Utsugi accidentally provokes Kirara by calling her a 'blonde meat-bun.' This triggers Kirara to initiate a diet pact with Taichi. What unfolds when a boisterous, irrational, egocentric girl lacking personal boundaries barges into your life daily?