[It doesn't take detect magic to find him, a shocked "WAH" at the sudden echoing voice sounding from around a nearby corner probably being enough indication as to where he is. Though detect magic does still find him, of course, before the Mage Hand fades. His first experience with Thaumaturgy and it's being scolded...]

Owie...

[Kokichi glances around the corner, rubbing at his ears a little.]

Hey! Don't you know it's against school rules to yell while in the halls? What if you interrupt people who are trying to study or take tests, huh?!