You looked up at Isabel's giddy face, she seemed to almost be shaking with excitement at the new position you found yourself in, her baby brother. It annoyed you sure, but not as much as you expected.
Probably because this clearly was new to her too, or because she wasn't taking advantage at all since all she said was that she wanted to take care of you and was actually letting you decide, you thought things could be a lot worse. At your size your little sister could clearly bully you, and something about your perspective, how the shrinking looked so proportional was suggesting you that you would be weaker than even kids of your same size now, but Isabel was just there, teasing you and giggling, nothing more.
"Come on baby bro, pick something! Don't give that funny look to your big sister and decide" Isabel warned but it was a weak threat, like you she seemed to be a bit lost in thought too
You stammered a bit because you were scared a bit of what you wanted to do, you were quite curious about how much could you actually shrink and you were failing to shake that thought away at all. You reasoned you wanted to know if there was a limit to this and work what to do next from there, but deep down you were feeling like you were fooling yourself and you actually wanted to shrink more for some reason, as crazy as it sounded.
"I.. hmm I want to see how much can I shrink" you said, still doubting yourself and Isabel gave you a curious look, apparently it took her by surprise too
"Really? so you want to be my toy bro instead of my baby bro? or my micro bro?" Isabel giggled again, she seemed to have lots of witty comments for this supposed strange situation. Her comment did put some fearful images on your mind but again the fear failed to dispel the curiosity.
"I want to see if there's a limit, I'm scared but I guess that's the only way I can know" you tried to explain, but it wasn't convincing and Isabel noted it
"Hmm.." your eyes followed your little sister's face as she bended her knees to lower herself down closer to you, as if wanting to see if there was something physically wrong with you for wanting to shrink more. "How small do you want to get?"
"I don't know, until it stops? or maybe I can just tell you to stop" You had no idea really, the doubts in your mind extended to all kinds of puny heights
"Ok baby bro" Isabel said, her eyes still showing some surprise and her tone exposing a bit of disappointment, she probably would have picked playing with you at this height. She was also curious though, that was clear
"You know what to do then" she smiled and went to sit down on the couch, looking at you expectantly and extending her leg towards you.
You did a double take on how imposing Isabel looked now that she was sitting, her foot wasn't close to you yet but the way she extended her leg you could just walk and put your face next to it! You felt a bit like a lowly servant next to the throne of a queen or something, if the queen was a little girl on her pajamas, and you wanted to be even smaller?
Questioning the absurd situation also failed to counter the other strange sensation in your body, as you just hesitantly approached her foot, put your face near her toes just as she was doing when she wrapped your legs around you earlier, and remained there waiting to see what happened
Isabel just giggled softly, amused at your strange behavior but liking your bravery, and waiting with excitement
What happens next?