CH 1: After A Long Struggle

This is an AU. but very similar to original their is just difference in timeline

At a night giyuu was visiting the graves of his comrade who had died in final battle then a miracle happened and he was in his room and he can feel his right arm again (his arm was cut off by muzan) when he saw himself in a mirror he was around 20 or 19 year old wearing his demon Slayer uniform...... Now he has the chance he wanted to save everything but can he do it now

((Any characters did not belong to me I just write the story all the the character rights belong to demon slayer franchise))