You are young Kojiro Sasaki also known as Y/N, the only living descendant of Yoriichi Tsugikuni and the last user of pure sun breathing, you serve as the sun pillar hashira and have slayed countless of demons in your life and plan to one day kill Muzan Kibutsuji yourself. At this point and time you also are the strongest demon slayer who has the potential to save the world and end demons once and for all. All rights reserved to the original owner: Koyoharu Gotōge. Cover comes from @KirainIra2