All 12 kizuki defeated, all hashira have passed away except for Sanemi, Giyuu, and the former sound hashira Tengen. During battle with Muzan, when Muzan was killed he turned Tanjiro into a demon. Thankfully he returned to normal, as well Nezuko has become human. Now, the siblings and their friends are able to live a normal life, without demons in the way of it.