You and the newly transformed Jung decided it's time to find Eric, and with some looking around, it isn't actually that hard. The two of you spot Eric and begin to approach him, your muscles allowing for a smooth glorious pace. Eric sees the huge size of the two of you and begins to run, unfortunately for him, you guys are way faster. The symbiote you both wear knows what to do next, and the cup you both have opens up revealing your monstrous cock and balls.
"Wait what are you guys doing? Why do you look so different?" Eric asks in fear
The two of you give no response, and instead begin to stroke each other. There is some moaning, and before you know it you both come.
Black symbiotic cum flys through the air right at Eric. It lands all over his body. It suddenly begins to animate, as tendrils get to work. While the goo doesn't need to cover much more, the tendrils do begin going in the small spots you missed. Suddenly Eric moans in ecstacy as the tendrils assault his ass. The symbiote begins to tighten onto Eric showing every detail. It goes into his mouth and then the magic happens.
Just as it had been for you and Jung, Eric's muscle explode all over. His shoulders become broad, muscles becoming extremely broad and spreading down his arms. His pecs, more defined than humanly possible, push out far enough that Eric can't even look down. His legs knot up and bulge out into an 8 pack. Just below that his cock and balls grow to immense proportions, with his dick reaching 12 inches! Behind that region, his ass goes rock hard, and the suit tightens and morphs so well in that area the you can easily see his crack. Eric's body is masterful, and to finish, just like you and Jung, his head grows to match all other proportions, and his face morphs to become so beautiful, it could make a straight man gay.
With everything being complete, Eric stands up and new cup grows over his privates.
"Thank you my friends, for sharing this wonderful gift with me." He says in a deep masculine new voice
"Let's fuck" you say
With the the three of you join together in a wonderful threesome, and just as before you all seemingly grow more muscular. The symbiote in your minds continues to influence you and has it's eyes set on a city in the distance.