The yukkuri have a special controller with five switches, one for each vowel Pressing a switch calls an "oniisan" who does something different for each switch (each sentence we see in the abyuse panel begins with the selected value) Reimu presses "A", and she is thrown away, because that's what "A" does Little Marisa then presses the switches from "I" to "E", and the parent Marisa is abyused accordingly Then she presses "O", and her accessory ("okazari") is torn Finally she presses "A" again, probably out of uneasiness