Sexual relationship between siblings, other than elricest.
“Are you all right, Loincloth Witch Alphonse?” “Y-y-yes,” the young hero stammered, feeling as though at any moment his heart might leap right through his ribcage.
"Mother?" And his voice broke, shattered as he raced to her, arms wrapping around her thin body, embracing the image, the idea. "Mommy!"
The first time was not a night of magic or fireworks, not something dreams were made of, not something that either of them planned on repeating again.