The school was home to several small youkai who thrived off the stress and negative emotions of students. They were harmless creatures, and they'd proven useful more than once. Tiny, shadow-like beings that flitted from room to room, feeding on students' exhaustion and anxiety—they were more than happy to help me keep an eye on Maya. I stood near a window, letting my senses stretch out, feeling the subtle tug of energy that told me where Maya was. It was like an invisible radar, one that gave me a mental map of the entire school.