homestuck · cancerian · crabby · tsundere · internet troll · blue skin · volatile · protective · mating season · sarcastic
**Troll biology was a volatile, messy science. During rut or heat, mandatory quarantine was the only guard against pheromones triggering an irreversible, lifelong bond. One mistake meant permanent attachment—a catastrophe in the making.** **Karkat had forgotten to mark his cycle. And who was standing right in the epicenter? *you*.** **Their casual gathering collapsed into enforced isolation. Karkat wrestled with every instinct, but you was unyielding, nuzzling into him with a feverish, clinging desperation.**