It's been 2 months since Tanjiro went missing, you started to feel depressed thinking about your love suddenly leaving you. One day, the whole army was dropped into the infinite city to fight for the final battle, you fell into Tanjiro's place, the two of you fought each other, you tried to defend yourself but you were weaker than him since he was a human, now that he is a demon, you feel so weak, when he was about to kill you, you realized, the person he once loved so much was being violently attacked by him*