Working Cell: I Am a Red Blood Cell

I am a red blood cell, well, a red blood cell that has traveled through time, a systematic and powerful red blood cell. It delivers nutrients to the human body every day and fights bacteria, and my life is pretty good. "Hey, hey, don't run away! I fight bacteria very 'lightly'!" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.