Reflecting on the butterfly effect, I also realized that Tsukiko with Ayano and Livia (Seliad also participated, but didn't survive), by showing mercy to that kirishimka, unintentionally created conditions that led to two of the worst tragedies of Reim (Tiaria) and Nihon (the massacre staged by Twice, in the Yanagi Temple). Not the worst ones, since Rinze exists, but still. In Tsukiko's context, it even led to her death, several years later. And then you go and cleanse cursed palaces, after something like that...