In the year 21XX, decades after the development of medical nanomachines, a new disease was discovered in an era where virtually all illnesses had become treatable. This unexplained disease causes numerous infections, malignant neoplasms, parasites, and other pathogens to appear within the body, unleashing a barrage of pathogens. Even when medical nanomachines are administered, they are instantly destroyed by this barrage. From the mouth to the body's core... Let's keep moving forward while treating the illness! It's a shooting game, but you can't shoot!? Fight smart by deflecting enemy bullet patterns instead of resorting to barbaric tactics inside the body! Reflect too many bullet patterns at once and your barrier will break, putting you in a pinch! The battle against disease is always a race against time! If you don't deal damage efficiently, the disease will progress and you'll fail to clear the stage! Customize yourself. Choose equipment tailored to enemy characteristics and formations to tackle stages and score attacks!
