Although Baph, Maggie and Josie would have been more than willing to keep indulging in their transformations with Jen and Claire, the two sisters recalled that they wanted to do another transformation in the spacious gym before cheer practice. As such, they took their leave and headed to the gym early. When they arrived there, they found the place empty aside from the water cooler and other supplies.
Jen spoke first. "Well, at least it's early enough that no one's here yet. I feel like these forms would be kinda inconvenient for cheer practice, but don't want to risk something worse. Want to try taking three pills at once so we can go back to being a hydra?" she asked.
"Sounds good to me," Claire replied. "How is that going to work though? Our bodies are separated right now," she added with a bit of concern.
"That's a pretty good question. I'm game to experiment and find out if you are."
"Sure, I doubt things could get that much weirder anyway."
"Alright, I'll go first then," Jen stated.
Spitting out three pills, Jen scooped them up and tossed them into her mouth before swallowing. As expected, her current transformation began to undo itself, and she soon was looking like a lamia. Once again she grew arms until she had four pairs of arms and two extra pairs of G-cup breasts grew on her chest, and all six breasts had their nipples turned into lipples. Down by her genitals, her pussy split into three, and the clits inside them split into four, while sixteen 8-foot long prehensile dicks grew out above her pussies.
Logically speaking, the next step of the change should have been for her to grow a second head, and here is where the uncertainty was. Jen and Claire watched in anticipation as Jen's head moved over to make room as a lump began growing next to it on her shoulders. To their surprise, the new head took on Claire's features as it finished growing. Opening its eyes, Claire was suddenly hit with a torrent of sensory information as she realized she could see out of the new head and feel everything on Jen's body while still feeling her own body. The rest of the transformation continued as Jen's (and now Claire's too) body split and regrew repeatedly until she finished with 8 torsos connected to the same lamia tail.
"Wow, that was... something," Jen said while out of breath.
"It's so weird being in two places at once... and it feels wrong having two such different bodies. Mind if I try taking three pills now with my own body?" Claire asked.
"Go for it," Jen responded while fondling several of her breasts.
No longer hesitating, Claire quickly popped three pills and waited for the change. Much like Jen, she shifted back to being a hydra lamia, and soon Jen became her bodymate again on this second body. After the transformation finished, Jen and Claire found themselves in the unexpected situation of sharing not one, but two hydra-lamia bodies, and could feel everything in both bodies at once.
The sheer pleasure of the echoing sensation of transformation that ping-ponged between both bodies caused them to cum shortly after the transformations finished, leading to the hydra part of the change kicking in. Jen and Claire moaned in pleasure as their torsos began to divide, causing them to have 16 branches on both bodies. Following the previous pattern, a fifth clit grew in each of their pussies, and since their dicks were prevented from multiplying, they instead grew two feet longer, and now had two urethras in each, effectively doubling the cum output of each.
Still incredibly horny and more numerous than ever, Jen and Claire decide to...