The eighteen body bros decided to head back to Ty's house--maybe now they all lived there. When they got back to Ty's house, Ty and Dustin saw that it had changed considerably. The house was now a mansion, with a wide porch and a double front door in case a wide body had to come through. Going inside, the teens saw a large entrance hall--at least, the six head at the front of the body did. Ty reminded the twelve in the middle and the back that his recent wish--that everybody in town had the ability to fuse and shapeshift as they pleased--also applied to them. Within seconds, these twelve boys were stretching their necks out like rubber, stretching and twisting them to get a good look around the room. They had to squish their necks back to avoid hitting their heads against the floor above as their shared body walked along.
There was a library across the hall, and all of their dads were in it. Interestingly, all eighteen dads were fused in the same way as their sons: one body, three rows of four legs, three rows of six arms, and three rows of six heads. Each man's head was in the same position on their body as that of his respective son on the teens' body. Ty explained to his new brothers that he had secretly made that wish on the way home so that their dads would be proud of their sons being fused the way they were.
Walking out of the library, the body bros walked up the main staircase. After heading down the second floor hallway, the boys found what looked to be their bedroom. It was actually Ty's room, but Ty had also wished that any physical objects--houses, beds, furniture, etc.--would change accordingly to accommodate any and all transformations. (For example, if the boys unfused back into eighteen separate beings, they would not live in the same house together, or sleep in the same bed together. Ty's power was unique amongst anyone's in town, so he was able to do more than just fusing and shapeshifting.)
Then, Ty suggested that he show his body bros something. He led them to a corner of the room, where there was a bookcase set into the wall. When Ty pushed the bookcase with his two arms, it opened.