Is this kind of development possible!? Life for the two is full of turmoil!? The naive kunoichi Satoko, who escaped from the ninja village, and the skilled high school assassin Konoha. With a move, matching uniforms, and a change of environment, they refresh their spirits! A new assassin appears before the two who are working hard!? Wait! There are two Marins!? No, there are even more!? You can't take your eyes off the series of shocking developments! An unpredictable plot and shocking Volume 4!!