No one should take Setsuna's petulance seriously, but his baby rage starts to sharpen at what he feels is an accusation on a subject he takes rather seriously. Threat of whole world genocide for every living and breathing thing is a bit much for him.

"No. I hate him because," he ticks off one finger, "I just said he forced Lucifer into his role against his will," another finger, "he hates all of his children," another finger, "he turned me..my past life, whatever, against her brother," another finger, "he forced everyone to sin from their very conception," his thumb, and now he has a clenched fist, "and he's going to kill all of us. There's very little to like there."