Unnamed Memory, Vol. 2 (manga)

A week has passed since the murder at the festival, and Oscar has returned to his busy daily life with government affairs while Tinasha has finally begun to be respected as a court mage. But because they are often seen together, there always are rumors about them in the castle, and their nightly meetings to uncover the ones behind the incident aren--t helping any. Then, during one such meeting, Oscar accidentally ingests an aphrodisiac in front of Tinasha...