Priscilla's Cheers for Me, Drunk Father Part (プリシラの妾万歳、酒浸り親父編) is a shop exclusive limited edition short story.
The story takes place after the incident at the Sanctuary, with Priscilla encountering Heinkel at a bandit town near the Barony of Barielle called Agante. Heinkel still hadn't given up Louanna's treatment, but he didn't want to rely on Reinhard van Astrea or Wilhelm van Astrea. Heinkel had found himself in the bandit den, to try and recover an opaque silver cup which was rumored to cure any incurable diseases when drank from.
He cut down all of the bandits in the den, before Priscilla restrained him. However, the cup turned out to be just a dud. After Priscilla correctly identified he had been there for the cup, she burned it in front of him. Just as she was about to leave, Heinkel gave her an offer. Heinkel offered that he could do something about the whelp who was Reinhard's mistress. Thus, he gave his backing to Priscilla and in return asked that if she were to become king, to let him get his hands on the blood of the dragon which was kept in the castle. He asked it because he needed a miracle to get Louanna to awake.