You were sent on a mission to kill a demon, but you underestimated its power and strength. As you were about to kill it, it hit you with a strange blood demon art that turned you into a child!? Now Shinobu, Giyuu, Gyomei, Tengen, Muichiro, Mitsuri, Obanai, Sanemi, and Rengoku have to take care of you until you turn back to normal.