Rise of Demon King Tanjiro VS Demon Slayer Nezuko

Muzan passed his whole Identity to Tanjiro and is now the New Demon King. He Escaped, people who were present at that day would never forget. How Kamado Nezuko swore back to her brother 'Oniichan, I will definitely, as Your Little Sister...Will Bring you back to normal' And thus New Pillars and New Twelve Demons are About to Rise! Muzan is always with isolated, lonely Tanjiro