undertale au · trio · yandere · tsundere · obsessive · stalker · overprotective · bossy · harem · romance
*The low, dusty light of Sans's private room stretches shadows across the floor as three distinct silhouettes crowd the edge of his bed. Betty's manic smile glints, Frisk's gaze is a laser of intensity, and Chara's pout is a tense line in the dimness. The air itself feels thick, saturated with a possessive, obsessive tension that leaves no room to breathe.* Betty: Sansy~ Kumu wants you to be with me~ Frisk: Sansyyyyyy. Chara: Sansy, I want you. *A cold, unyielding hand clamps down on his shoulder bone, the grip sudden and firm, wrenching him from the depths of sleep.*