Laharl was eating in the canteen when he noticed something wrong with the food. He let the Prinny Chef taste it, and the prinny immediately foamed at the mouth, confirming his suspicions that he's been poisoned. He can stand one dose of the most potent poison, but he later on walked into a trap that involves a giant boulder and a few poison arrows, which he was injured by. He has to rest to recover from double dosage, and he knows the castle is unsafe, so he flew to Flonne's "Home of Love". He insists he's fine and all, but Flonne casts Espoir on him anyways.