HELLOOOOOO! A short summary of the the first chapter! Nezuko and Tanjiro at the age of 12(Tanjiro) and 11(Nezuko) they found a type of thing that could turn them into demons the unfinished medicine that Muzan took they found it and because of its smell they decided to use it for the tea they where gonna have and then found the blue spider lily witch they also used for their tea

Tanjiro finds out his hidden feelings for Tomioka ( Giyuu ) and soon learns Tomioka ( Giyuu ) feels the same.

[THIS STORY WILL CONTAIN SPOILERS FROM THE KNY MANGA! READ AT YOUR OWN RISK!] A demon named Kibutsuji Muzan killed and slaughtered the Kamado family. The oldest son, Kamado Tanjirou, and his sister, Kamado Nezuko are the only two survivors. Unfortunately, Nezuko was turned into a demon. [This story begins where Tanjirou and his friends went to the train. But the night before they left, they were attacked by Muzan at the butterfly estate] Tanjirou fought him but lost and was also turned into a bloodthirsty demon!! After that incident, things started going, haywire, to say the least... What will the Hasiras do? What will happen to Tanjirou and Nezuko? Read to find out!!!

When Tanjiro becomes a demon, he only kills those who are worthy of being killed, and the demon slayers take notice. Fanart in thumbnail DOES NOT belong to me. Manga Spoilers!