Genya thought his highschool life would be living hell especially with his older brother being his math teacher. The only subject he was bad at. But it turned out better than he expected with tanjiro and the others being around. ⚠️THIS IS NOT A SHIP/ROMANTIC STORY⚠️ I do NOT own kimetsu no yaiba Highschool AU I just finished the manga and this is my way to copeAll Rights Reserved