it's not nonsense...
"when Lucy wrote her diary/book at that moment she already changed the past"
you can't change the past in the future. that's impossible. they can change the future after reading her diary, but only in the present and only IF they manage to read it... FLucy wrote the diary in a timeline where this whole time travel didn't happen. why didn't she said anything about this plan not working then? if it did happen in her timeline she should knew about it and it would be in the diary. try thinking before talking nonsense.
quite much the same goes for Rouge. he may pretty much just disappear in the next chapter...
Let's try something else.. You're not getting what I'm saying.
Answer me this:
* How is Rouge able to travel back from the future when the gates are being destroyed in the past ?
(this is what is happening this chapter)
this is perfectly fine to prevent someone coming from the future, but if the person from the future is already here then it didn't work/there are multiple ways to time travel.
Let's say FRouge comes from 2020, then how is he able to travel back to 2013 when the gates in his time are already destroyed at that time? Remember that this is the present.
Lets use a different metaphor. If DeLorean's are the only way to travel back in time as discovered in the future, then how is it possible to travel back in time if DoLorean's were never made ?
Future Rouge can't exist here because the gate is destroyed NOW there is no gate anymore in his future of Lucy's future, that would've given him no options to travel back to 2012 (just before the present) to try and kill Lucy.
Him being here is already a contradiction.
He could have never made his initial time jump, there is no gate to begin with.
But even if Hiro chooses to go along with this path then all memories and events should be erased from everybodies minds, the fight and destruction would never happen and Ul would come back to life. The story should continue again from right after the tournament. That is the only possible way for him to explain this. That the current chapters are a glimpse of a third future and not the real present.