Finally finished it. I loved the story but can see a fatal flaw. Krisha had the power to change the fate and only changed it in the current timeline but Jaan had memory of Krisha appearing in the battlefield when he was young, hence the nickname Red Witch, which means that Krisha in previous timelines chose not to change the fate? Fatal flaw indeed. Willing to change my opinion if someone explains it better.
I think it's because she didn't know that he's planning to become a living corpse, possibly leaving him to deal with the battle alone and not even participating.
That's the only possibility I can think of
╮(￣▽￣)╭
I mean, it kindda tricky when you don't what happened when she experience the time regression.
I'm losing it! It's so fucking hilarious ε=ε=(ノ≧∇≦)ノ