Manga Osananajimi no Mune ga Ookiku natta no wa Ore no sei ka mo shirenai yang dibuat oleh komikus bernama Agasa Reiji ini bercerita tentang In his second year in high school, Yamato has a big problem. His best friend from childhood, Honoka, has a certain stress-induced illness that made her chest huge. Now he struggles to protect her from those who look at her with predator eyes...!?