A high school dropout named Shizuka has been unable to find steady work and spends her days lazing around at home like a useless brother. Despite being disowned by their parents and lacking any life skills or romantic partners, she continues to spoil him out of devotion. This unhealthy dynamic between siblings raises questions about what truly motivates Shizuka's selfless actions... Is there something more sinister lurking beneath her seemingly altruistic behavior? It should be noted that the contents of this recording may vary depending on the distribution method used.