As the two lovers were shocked to see Rika changing in front of their eyes, as Renamon couldn't believe what she was seeing before her very eyes. Rika's hands were the first to change, as her pinky, ring, middle & index fingers fused together into two thick Renamon fingers, all the way down to her bones.
While her fingers changed, her thumbs thickened to the same thickness as her two Renamon fingers on each hand. It wasn't until the changes spread up her arms, as a set of fine silk sleeves appeared on each arm, resembling the same sleeves Renamon has. But as those changes occurred, Rika's body slowly shrank to about a height of 5 feet 8 inches tall, the same height as her Renamon lover. After that change was finished, Rika felt a tail growing, as Rika looked at it & recognized what it was as she said, "Wait a minute, this is a Renamon's tail...." Rika quickly turned her head toward Renamon & asked, "Sweetie, why am I turning into a Renamon?!"
"I-I don't know, but I thought they were just rumors." Renamon replied, and Rika changed even further, as her feet changed into a Renamon's feet, which had 3 toes with thick nails at the end. It was then that not just a Renamon's distinct fur pattern, Rika's clothes changed as well. Rika's undergarments changed, as her white bra & panties transformed into a set of magical purple silk bra & panties. But as for Rika's pajamas, her PJ shirt unbuttoned itself to relieve it's wearer, as the PJ pants grew a baseball-sized hole at the seat of the pants to accommodate for Rika's Renamon tail.
Finally, the changes moved up toward her head & neck. Her neck got thicker with a inch of flab. However, her head changed into that of a Renamon's head, as the face grew into a Renamon snout. Fortunately, Rika's human hair still remained on her head, but it began to grow longer, as her hair length reached down to her knees & it began to somehow create a ponytail knob at the end.
With the transformation complete, Rika was now a full-fledged Renamon.