According to my friend, her ex betrayed her in that lifetime by leaking their battle plan to the enemy. And as they fought, they were soon ambushed by archers from the enemy unit.

Reading this made me feel giddy because her dream felt like a plot from a fantasy-romance novel. The moment I read that in the end, her ex took the arrow—ahhh my favorite tragedy! Anyway setting that aside, yes knowledge is really powerful, and like you, I also chose the first option which is to keep the memories. Not that I hate the people around me, but rather it's the opposite, I love them so much that I don't want them to meet me anymore.

Why? Because I think that unfair to them to experience the repetitive cycle of pain, agony, anguish, and probably a little happiness as a side dish I've brought to them. Also I wanted to improve myself further and I know I'm bound to experience some similar ordeals I have in my past life, so I would rather have the memories than have those people important to me suffering again...