Zelda: So, what’s with Kashiko and Sephiroth these days?
Monika: Everytime someone does anything to Sayori, or even says negative things about or to Sayori, especially about, Sephiroth would injure them severely one way or the other. In extreme case scenarios, he would put them out of their misery. Kashiko thinks Sephiroth is being too extreme, even though Sephiroth himself thinks that Kashiko is being too callous about the whole thing. Because of this, Kashiko and Sephiroth tend to be at odds over the way Sayori should be treated
Zelda: I can tell that Sayori’s presence alone had a significant impact on the Smash crew. Albeit from the looks of things Sephiroth probably understood DDLC Act 1 differently than Kashiko