Marco watched as Francisco's hair became shaggy and a thick coat of hair spread across his body. It scratched Marco with it's rough texture. It reminded him of animal fur.
Francisco's muscles became slightly more defined, making him pound even harder into Marco's sore ass.
Marco tried to escape, but he was pinned down again by his boyfriend.
Francisco's hands squeezed Marco's shoulders tightly as his hands and feet grew larger, fingers stretched and held Marco firmly, while strong legs restrained his own. There was no chance to run.
Francisco finally came as his brow pushed forward. He got off of his mate and grunted in triumph. Marco jumped off the bed and faced Francisco. Before him stood a primitive animal. He could make out his love's face behind the long hair and fur.
"Babe?" he said "Are you still in there?"
Francisco was indeed still there, but he no longer knew who he was. instincts to gain territory and mate over powered what little was left of his mind.
Marco suddenly spasmed as his body erupted with rough fur.
"N-no, please!" he cried. He fell to the ground as his muscles grew larger. They swelled until he was twice as big as Francisco. He sped through his transformation, his mind barely resisting. He stumbled to the door and opened it. He saw the kids and pleaded.
"Help me."
Ric smiled and pointed at the book. Marco understood.
"Y-you did this? Why-"
Marco was cut short as his skull reshaped. His eyes looked around the room before he saw his mate. He smiled and aproached him. Member erect.
Josh turned to Ric and said:
"We should change them back."
"Why?" Asked Ric. "We can do that later. Besides, I want see what else we can do."
Josh shook his head.
"Bro, we donn't even know what this spell will do in the long run."
"Let's see then. It says..."