Kemono no Noroi wa Koi de Hodoku

A wizard named Iori and a werewolf named Hanao have lived together for ten years in an effort to find a cure for a curse that causes transformations during a full moon. They discover a connection between the transformations and sexual desire. Iori helps Hanao manage this by teaching him how to relieve the tension, which also helps control the transformations. However, Hanao begins to develop strong feelings for Iori. Upon realizing this, Iori uses magic to erase those feelings, stating that Hanao cannot form relationships with someone who is not human if he is to live in the human world.