<span class="mention" data-user-id="M2zMd9GD">@Rin</span>  they both are different one is a past the original timeline and the second world you see the beating around is a future MC I think that is original past something like that and your confusing it is because the chapter has mixed when you look I mean click on the chapter you will see there is a chapter 1 and side story chapter 1

I think mc is the black haired one with round glasses, but wth? This story with the grey haired one ...