Almost immediately after your parents leave, your two sisters call you to the backyard Alicia: Aidan Computers Empire, can you come here?! Kyla: Aidan Computers Empire we need your help in the backyard! You close your laptop and reluctantly make your way to the backyard. When you get there, you see them running to the house i am gonna go in the backyard to relax

you are not aware of their biggest plan because they have a crush on you and they don't have morals and they wanna make out with you and the backpack won't be cramped due to it being roomy and Alicia has more of a crush on you than Kyla and Alicia actually fantasies you all the time and Alicia wants to have a deep bond with you because

Alicia take care bro

Kyla I will just help Alicia with her stuff

the girls begin to develop a crush on you and they dont care about morals for that goes in the backyard not aware of the girls packing a AC food and drinks and bathrooms bags in the backpack and they are preparing the best vacation of their lives in there so they will lock the zipper by using aidans lock because they only want him to set them free so they will be trapped in paradise and their food supply will last them 40 years same eith water and drinks and bathroom bags and they are not gonna want out of the backpack because they need a vacation from mom and dad

Aidan is currently in the backyard and the girls feels like she isn't getting enough privacy in her room so she wants to trap herself inside of Aidans backpack she packs an AC food drinks water and bathroom bags and she wants to use Aidans lock because she wants nobody else but him to open his backpack and the backpack is soundproof to the point of when she does fit in it is impossible to hear her you can only tell if she is in there by her weight and movements of she makes any movements

Aidan comes back home and the girls have already locked themselves in your backpack but it is impossible to get cramped in it it has enough space for them to not get cramped even if it is just a typical backpack and they locked the zipper so that nobody can open the zipper well except you because you have your lock key and they don’t even want the backpack opened because they want privacy and they are naked in there so that’s why and they don’t even want out of there at all they won’t even leave

the home seems empty but the cars never left and there is no sound and you have no clue about your secret in your backpack and there is no evidence of them being inside of your backpack and Alicia wants to make out with you and they left their clothes and condoms right next to your backpack on accident indicating that they are doing some sus stuff and other than that there is no indication of them being inside of your backpack except for occasional movements but other than that it is impossible to tell if they are in there

and they added your lock on the zipper of the backpack not wanting anyone to open it due to them not having clothes on in there but you dont know that but you can still use the other pouches on your backpack just fine but you have the key to your lock and it is impossible for them to get cramped in there due to how roomy it is and they have been looking forward to this private vacation for eons

and when you do enter your bedroom you see their clothes that they just wore are right next to your backpack and Alicia left a secret note for you saying her love to you and her sending secret pics once every noun and then indicating that Alicia has a secret crush on you and every once and a while the backpack does move around due to them being inside and if you do lift your backpack you will see 2 bumps on the bottom of the backpack due to their weight the bigger bump is Alicia and the smaller one is Kyla and Alicia is your stepsister that's why she likes you and Kyla is your biological sister