Majo no Koi wa Kindan to Haitoku de Tsukurareru

Marika is a witch exiled to the human world after breaking a taboo to save a human child named Ryou. To return to the spirit world she is forbidden from becoming involved with humans again, yet she and Ryou are taken in publicly as orphaned siblings and remain together as he grows older. Marika does not age in the same way, while Ryou gradually becomes a young man, and the bond created when she saved him turns into a forbidden attraction. Their private nighttime closeness places both Marika's chance of returning home and their unusual relationship directly against the laws imposed on witches.