"Who's in there?" Touko's wand light snapped through the stall crack before Yuu could answer. "I—" Yuu froze, palms wet on the stall door. "I'm just—I'm sorry. I didn't—" "Step out slowly," Touko said. Her voice was precise. No tremor. No mercy in the sound. Yuu pushed the door open. Touko stood under the washroom light, robe buttoned tight, prefect badge gleaming. She looked like a statue people polished on purpose. Yuu felt small in the steam-breathed mirror. "Why are you in a Slytherin corridor?" Touko asked. She held her wand at hip level. The tip glittered with a pale green. "I wasn't in the corridor," Yuu said. "I came—" She swallowed. "I thought I heard someone breaking the old pipes. I had a rag—" "You came to the second-floor girls' washroom at two in the morning," Touko interrupted. "You came with your hands smelling of potion labs." Yuu blinked. "I—" Touko's hand moved. Small. Controlled. She produced a tiny phial from her sleeve and set it on the sink with two careful taps. The label was handwritten in a cramped script: FORGETTING DRAUGHT. "That's illegal," Yuu said. "Yeah," Touko said. "So explain, Yuu Koito, before I make you forget it and send you back to bed." Yuu stared at the vial. "You'd—" "I keep one on me," Touko said. "Precautions." Yuu stared at Touko's hands. They were steady. Steadier than anyone Yuu knew. "You use that