Jerry was reading the forbidden book he found with Kale, sipping a coffee, as the week neared an end. It also meant Kale would be back soon, but there was a problem. As he read the possibilities of transformation spells, he noticed something peculiar, a little note that he had not read prior. He realised, he had messed up big time. The note read "never mix a transformation spell with a soul based spell, for this is the mistake all magicians commit in regards to transformation spells. To transform is to become a new object, not become a part of something."

It is an understatement to say this was bad news since the book did not provide specifics of what could occur. Jerry now also learnt something that was never taught; in the schools where he and his half-brother learnt magic, teachers only said transformation spells were bad news, but no one ever specified why. Today, he learnt that why, and his heart raced. He was worried for what would happen to his brother, and so he looked for a solution. Thankfully, the next few pages said that if a transformation spell went wrong, simply cast a new one, but ensure it is not mixed with a soul based spell. He also now wondered what was the difference, but after looking at other books, he found out that a transformation spell is always confused for a soul based spell. Reality is that soul based spells are the more dangerous ones, since apparently they can leave someone disfigured. He had a solution, and now waited for Kale to show up.

A few days passed and Kale appeared in the room where he was transformed. A loud scream of pain was heard and Jerry ran over to see what happened. His eyes saw a disfigured human body, his legs contorted in directions that should not be possible, his face disproportionate, stuck in a position in which he could no longer move. "What is this??" Kale asked, gritting his teeth.

"Well....I kinda fucked up, but don't worry I have a solution." Jerry quickly began drawing a smaller incantation next to the one Kale was laying upon.

"Okay hurry it up then." Kale responded in pain. He did not care for what it was as long as it meant ending the pain.

Jerry bit his lip as he finished, asking Kale to place his hand on the incantation, and also dropping a strand of his hair on the drawing. He then muttered the words, and in a flash, his half-brother was now a pair of pink panties with a pattern of red hearts. He used a telepathy spell to ask if Kale wanted to spend a day as her underwear, or if he wanted to be back to normal. He did spend a week eating and drinking her waste fluids after all. But lust was ever so powerful, and Kale went for the one day panty option. Sighing, Jerry gave in, and simply snapped his fingers to replace the panties the girl was wearing with Kale. And as he did, a man appeared behind him, dressed in a robe with a cape, holding a stick.

"You two have been using too much magic, a lot of it dangerous." He spoke, his voice deep and raspy.

"Shit..." Jerry muttered.

"I am here to let you know Kale might not live to see his 70s. You two might want to stop for a few weeks, if you wish to live for long." He added before vanishing again.

"What a bunch of jerks." Jerry spoke to himself.

It was bizarre. Kale could not feel but he could smell, see, and even hear. He noticed his environment change from a bright room to a dark, smelly place. He felt himself move as she moved. His face was now the inside of the underwear, and it hugged her genitalia very close, like a child hugging their teddy bear. It was hard to describe how it felt, but the strong smell, similar to that of fish, was everything he felt. The forest that was her pubic hair felt like a kind brushing against him. 

This was only the front. Her behind felt in touch with his legs, maybe even his genitalia. It was hard to tell which parts of his body were in underwear form. He definitely felt like he could smell her rectum from the front, and he was proven right, when a fart slipped. He felt tickled, but the smell was present. Other parts of his body felt intertwined, hugging her thighs, her pelvic area. As she walked, he hugged her more, and as she stopped, he hugged her less. The sweat dripped over him. And when she sat, he felt the pressure, which was greater when she crossed her legs.

Everyday movements were so subtle and easy to notice now. Kale spent a majority of his time in the dark, smelling, feeling, absorbing her sweat. It felt as if he was swallowing the fluids when he absorbed them into the fabric that may of been his skin. It drove him crazy to know she had a sentient pair of underwear but was unaware, though she likely would not take kindly to finding out. But she was confused when she went to use the toilet. Her panties did look different. But for Kale, he was a bit glad to finally see some light, and have some fresh oxygen surround him. Or, well, however fresh toilet oxygen could be. Her face looked down at him and he was in awe of this giantess, who he was a part of, her well-curved body his domain, or temporary home, for he still had things to attend to. She decided to not pay her underwear much attention though and Kale was once again met with the bitter taste of her piss from the previous week as he rose to hug her genitalia again.

It became such a common taste, feeling, to have that golden liquid go down his throat, even though it was not, in reality, his actual throat. He wished he could eat her out, to have such a great sight of pleasure ever so closer to his face, and yet so far away at the same time. He was constrained by what underwear could do, and felt as if underwear were under constant torture, so close to amazing items of pleasure but never quite there. He enjoyed his time, which felt like ages, since there was no sense of time. But soon, it was all over, and he was back with Jerry.

Jerry told him about the man who showed up, and explained why he summoned back Kale far earlier. He was sad, but Jerry promised that in the next few weeks, they will get even closer to the cave that is her genitalia. So close, in fact, it'll feel unreal.