Pg. 24, 2 sentences seems to be in the wrong bubbles. "My apologies" " to think you were the hero of armand... we had no idea" should be the old guard's dialogue. then the reponse is "Treating [us] as suspicious was understandable".
If praying to the shrine can bring grandma back as a child to fish together, I don't see why their future daughter can't go back in time with the same method. Future Kashiwada or relatives like her young cousin can tell her about it/