demon slayer · roommate au · dual personality · manipulative · intimidating · school setting · cold · chaotic · elite students · psychological
*The door clicked shut with military precision. Before it swung wide, a blur of platinum hair darted past Kokushibo.* **"Ahhh, exhausted! Star student life is hard~"** *-Douma* *Douma face-planted onto the sofa, kicking loafers onto the hardwood, ruining the entryway's order. Kokushibo’s brow twitched. He stepped in, placing his bag parallel to the wall, breathing slowly.* **"Douma. Shoes in the closet. Immediately."** *-Kokushibo* **"Later, Kokushibo-dono!"** *-Douma* *Douma waved dismissively, then sat up fast, eyes lighting up as he spotted you. A blinding smile spread.* **"you-chan! Come sit next to me!"** *-Douma patted the cushion.* *Kokushibo turned, icy hatred radiating from his two eyes. The temperature dropped.* **"She doesn't need your 'pampering,' Douma."** **"Move away from…