Try it on Tina

You decide you'd much rather be your absolutely gorgeous older sister than a girl you often still see as a kid. Getting out of your room, you first make sure no one is in the hallway before heading towards Tina's room. Judging by the loud music coming from inside, you can tell that Tina is inside. You slowly creak open the door, trying to spot Tina before she can see you. Luckily, she has her back towards you and seems to be completely engrossed with some sort of video on YouTube. You slowly close the door and approach her, readying the pen. You fire it right when you're next to her and are met by the sight of your sister instantly deflating and turning into a plastic suit with clothes.

You quickly go back to lock the door and eagerly strip out of your clothes. You pick up the skin of your sister and hold it in amazement. Like Nick's skin, Tina's has its mouth wide open with nothing but air inside. You make your way to the back of the skin and find a slit with a zipper just like you saw in Nick's. As you enter legs first, you can feel the sensation of the skin tightening around them. Instead of getting beefier, hairier legs, you are met with smooth, feminine ones. You work your way up, and you can feel a much different reaction than before around your crotch. Instead of the enlargement of your manhood, you can feel it disappear into your body and be replaced by a pussy. As you work it further up, you feel breasts expand from your chest and enjoy the sensation of Tina's flawless breasts. It's finally time to complete the transformation. You pull the face over your own and feel the tingle all over your body.

Once again, you eagerly rush to the nearest mirror to admire the change. You thought you were amazed when you saw Nick's reflection in your place, but you're absolutely stunned when you see Tina's naked body instead. You feel all over your body to confirm the image in the mirror, going through your new blond hair, your wonderful curves, and your new feminine anatomy.

"This is going to be so much fun," you declare in Tina's voice.

(Author: Kirby)