She lost everything at one night but received something at that night. A demon killed her family but she was saved by a man who promised that he will protect her. He taught you Total Concentration Breathing and Breathing Styles. One thing that you know is that,the man who save you is a demon that is stronger than Muzan,himself. With a lot of power you and him become the same title Hashira or more like a duo that never separate. What will happen when the war between demons and humans are getting closer and closer?What will happened when some of the volleyball players become a demon slayer? Read it to find out! _______________________ I don't own Haikyuu or Demon Slayer. Please don't copy my stories ideas. I don't own the photos or video of this story so credit to the owners.

° 'Iguro Obanai x female!child!reader ' ° ° 'Kanroji Mitsuri x female!child!reader ' ° → !platonic love! ← 𝙄𝙂𝙐𝙍𝙊 𝙊𝘽𝘼𝙉𝘼𝙄 Cold-blooded serpent pillar. The only person he is nice to is his love: Kanroji Mitsuri But what if, on one of his missions, he saves a girl attacked by a demon? °°° "What's your name?" "..." "I see, 𝙎𝙉𝘼𝙆𝙄𝙀" .. →The characters, world and story do not belong to me! They come from the manga by Koyoharu Gotouge! I only have y/n. enjoy. 𝙎𝙏𝘼𝙍𝙏𝙀𝘿: 07.13.24 𝙀𝙉𝘿𝙀𝘿: ?

When Obanai Iguro was on his last mission. He didn't expect to bring home a little kid. Find out what happens.