[c-] Casper is in the [3] basement of the [-ai] high school where he is lying down next to a 木 tree that grows there. Suddenly a student wearing a 足 wooden leg with a 爫 cleat on it comes over and 踩 steps on Casper, who yelps out in pain (despite being a ghost). The student, who did not see him there, apologizes for 踩 stepping on the ghost there in the basement.