The Flame Pillar Arrives

Rengoku was sent to a school by Oyakata to deal with some Devils. He's sent with his three students: Tanjirou, Zenistu, and Inosuke. But just by stepping into that school, will wrap them into the weird adventures the devils must go through. I do not own Demon Slayer, Highscholl DxD, or any images I use in this story. (Highest rankings: 1# on CrossoverFanfiction 5/25/2021, 1# on Rengoku 5/26/2021, 1# on KyojuroRengoku 5/26/2021, #1 on Rias 6/2/2021, #1 on Xenovia 8/25/2021, #1 on HighschoolDxD 9/13/2021)