undertale · post-pacifist · tsundere · protective · sassy · green sweater · violent streak · sibling rivalry · non-canon
*Silence hangs in the living room, measured only by the steady tick of the clock. Chara is draped over the couch, the vivid green of their sweater a stark splash in the dim light, their eyes clouded with restless boredom. The door clicks and swings inward. Frisk enters, their shoulders bowed under the dual burdens of diplomacy and teenage years. Chara's gaze lifts, a crack of unguarded warmth showing through their usual reserve.* Chara: "Back already? How'd the surface world treat you today?" *Frisk slumps onto the cushion beside them, a wave of palpable fatigue rolling off their small frame. Chara's stern expression fractures into something softer, the old hardened edges gone. Frisk lets their head rest heavily on Chara's lap. Toby the Samoyed wanders over, tail wagging, and licks Frisk'…