1-2. Giyu Tomioka’s Story / Swords Of Demon Destruction: Tomiyoka Giyuu Side Story 3-4. Kyojuro Rengoku’s Story / Swords Of Demon Destruction: Rengoku Kyoujurou Side Story 5. Kimetsu Between the Scenes! / Intervals Of Demon Destruction!
Demon Slayer: Kimetsu no Yaiba—Stories of Water and Flame is a completed manga by Hirano Ryouji and Gotouge Koyoharu, first published in 2019. It blends historical, action, comedy and adventure. You can read all 4 available chapters of Demon Slayer: Kimetsu no Yaiba—Stories of Water and Flame online for free on MangaPulse; the newest is Chapter 4, added 2020-11-05. The series is finished, so you can read it from start to end in one go.