Kuroba Kaito had successfully pulled off many spectacular mass-pranks in the past, so the students of Ekoda High weren't terribly surprised when, one day, the school buses suddenly resembled dragons eating students as they clambered in. The school itself was decked out to look like a castle, and the swim team's outfits had been altered to look distinctly more mermaid-like (though how he managed that with a deathly fear of fish was anyone's guess).
Aoko chased him around the school with a broom, wearing a witch's outfit, for the rest of the day, Kaito dodging flawlessly despite his wizard's robe.