Кищикоку саикьоу реиджоу ни ыору кен то кен то ренаи джуцу

This title is a serialization of volume 4 chapter 2 of Akuyaku Reijou Desuga, Shiawase ni Natte Misemasu wa! Said oneshot is chapter 1 of this series. The young lady Olivia is constantly surrounded by unsavory rumors and is feared by those around her. In order to improve her relationship with her fiancé, Prince Luke, she proposes a duel with him on the condition that the winner will get one wish from the loser. When Luke accepted, he thought she was planning to break off the engagement and he was determined to do so whether he wins or loses, but what does Olivia really want?