This is a tanzen.Demon Zenitsu AU.This was before Kaigaku turned into a demon(Spoiler).

"Zenitsu, Promise me you'll stay with me?" "Of course, Tanjirou." The two boys looked at each other breathing into their last breaths. "I love you." **I DREW THE COVER. IF YOU WANT TO REPOST IT ON YOUR SOCIAL MEDIA'S, PLEASE ASK MY PERMISSION**

𝚃𝚑𝚒𝚜 𝚜𝚝𝚘𝚛𝚢 𝚒𝚜 𝚊𝚋𝚘𝚞𝚝 𝚝𝚑𝚎 𝚔𝚊𝚖𝚊𝚋𝚘𝚔𝚘 𝚜𝚚𝚞𝚊𝚍 𝚜𝚠𝚒𝚝𝚌𝚑𝚒𝚗𝚐 𝚛𝚘𝚕𝚎𝚜, 𝚣𝚎𝚗𝚒𝚝𝚜𝚞 𝚠𝚒𝚕𝚕 𝚝𝚊𝚔𝚎 𝚗𝚎𝚣𝚞𝚔𝚘𝚜 𝚛𝚘𝚕𝚎, 𝚗𝚎𝚣𝚞𝚔𝚘 𝚠𝚒𝚕𝚕 𝚝𝚊𝚔𝚎 𝚒𝚗𝚘𝚜𝚞𝚔𝚎𝚜 𝚛𝚘𝚕𝚎 (𝚜𝚑𝚎 𝚒𝚜 𝚜𝚝𝚒𝚕𝚕 𝚗𝚒𝚌𝚎), 𝚒𝚗𝚘𝚜𝚞𝚔𝚎 𝚠𝚒𝚕𝚕 𝚝𝚊𝚔𝚎 𝚝𝚊𝚗𝚓𝚒𝚛𝚘𝚜 𝚛𝚘𝚕𝚎 𝚋𝚞𝚝 𝚜𝚝𝚒𝚕𝚕 𝚋𝚎 𝚝𝚑𝚎 𝚜𝚊𝚖𝚎 𝚠𝚊𝚢 𝚑𝚎 𝚒𝚜, 𝚊𝚗𝚍 𝚝𝚊𝚗𝚓𝚒𝚛𝚘 𝚠𝚒𝚕𝚕 𝚝𝚊𝚔𝚎 𝚣𝚎𝚗𝚒𝚝𝚜𝚞'𝚜 𝚛𝚘𝚕𝚎 (𝚝𝚑𝚒𝚜 𝚒𝚜 𝚊 𝚝𝚊𝚗𝚣𝚎𝚗 𝚏𝚊𝚗𝚏𝚒𝚌 𝚜𝚘 𝚙𝚕𝚎𝚊𝚜𝚎 𝚕𝚎𝚊𝚟𝚎 𝚒𝚏 𝚢𝚘𝚞 𝚍𝚘𝚗𝚝 𝚕𝚒𝚔𝚎 𝚒𝚝)

beep YAOI

This will have (Tanjiro x zenitsu VS zenitsu x nezuko)kinda also i don't do good with love storyline so really it's just Tanjiro & Nezuko fighting over Zenitsu sometimes/ or something like that Nezuko is a demon slayer as well as Tanjiro, they both tend to fight over who gets to hold Zenitsu's box when they go on missions (Past) Before Zenitsu was a demon, Nezuko, Tanjiro and him had a good friendship One day Zenitsu went over to the Kamado resident to hang out with Nezuko, Tanjiro and their siblings, but they were going to sell coal so he decided to hang out with their siblings while he waited for them..........then a demon named Muzan Jackson appeared and killed the kamado's and Zenitsu..at least he thought, when nezuko and tanjiro came back it was a bloody mess, as sadness filled the air they started running to the incident..........what will happen next...read to find out (If you watched demon slayer I think you have a clue) also not all events will be exactly the same

𝓗𝓲. 𝓣𝓱𝓲𝓼 𝓲𝓼 𝓓𝓮𝓶𝓸𝓷 𝓩𝓮𝓷𝓲𝓽𝓼𝓾 𝓪𝓷𝓭 𝓣𝓪𝓷𝓳𝓲𝓻𝓸𝓾, 𝓣𝓪𝓷𝓳𝓲𝓻𝓸𝓾 𝓶𝓮𝓮𝓽𝓼 𝓩𝓮𝓷𝓲𝓽𝓼𝓾 𝓲𝓷 𝓪 𝓼𝓷𝓸𝔀𝔂 𝓶𝓸𝓾𝓷𝓽𝓪𝓲𝓷. 𝓗𝓮 𝓭𝓮𝓬𝓲𝓭𝓮𝓭 𝓽𝓸 𝓬𝓪𝓻𝓻𝔂 𝓽𝓱𝓮 𝓭𝓮𝓶𝓸𝓷 𝓽𝓸 𝓱𝓲𝓼 𝓬𝓪𝓫𝓲𝓷. 𝓣𝓪𝓷𝓳𝓲𝓻𝓸𝓾 𝓭𝓲𝓭𝓷'𝓽 𝓱𝓪𝓿𝓮 𝓪𝓷𝔂𝓸𝓷𝓮 𝓲𝓷 𝓽𝓱𝓮 𝓱𝓸𝓾𝓼𝓮, 𝓗𝓮 𝓵𝓲𝓿𝓮𝓼 𝓪𝓵𝓸𝓷𝓮.

In this story zenitsu got turned into a demon but Kaigaku is still alive gramps is still dead but he didn't commit s*icide it was of old age. Nezuko is still a demon,btw zenitsu is a good demon:) ⚠️Warnings⚠️ Contains tanzen Boyxboy Girlxgirl Mentions of s*icide