Oh right, this title still don have scanlation or novel translation.

From last part, Mercedes fellow children from concubine came for a plan. The familys heir, Felix, intend to make a show of power in his coming of age party. He will defeat the other children to show he is above. Its just a vampire thing.

Boris, the eldest of the concubines children act as the boss, saying they will defeat Felix and he will be the head of the family. The plan is, let Gottfried, the big guy, to tire Felix, then Mercedes and Marguite will use blow dart to help Boris wins the duel.

Mercedes instantly lose interest. The plan is stupid as they don know how strong their enemy is, and Boris is a coward who won dare to dirty his own hand, not the person she would follow. Mercedes and Marguite are in weakest position as they e the least related to the main family, so if the blow dart incident is found out as cheating, Boris will just put the blame on them. In that respect, Felix who openly challenge everyone in a duel is still more respectable as candidate for family head.

Marguite is not in position to refuse though. Her mother is sick, and she had to borrow money. Mercedes thought, shes lucky to have past life knowledge and her challenger mentality, else she wouldve been in the same position.

To solve Marguites problem, she asks what the girl is good with. Because there are monsters living near her home, Marguite, who is illiterate, is used to drawing monsters for filing extermination request. Seeing the quality, Mercedes took her to the dungeons to make illustrations of the monsters there. Unlike illustrations of the common monsters Marguite used to draw, illustration of dungeon monsters should catch a good price.