Jinx and Vi

So, I was looking at facebook before work when League of Legends posted this fan art collection: https://scontent-lga3-1.xx.fbcdn.net/t31.0-8/13909157_10157532686185556_8989603585115576461_o.jpg

I'm a merchandiser so the job is largely physical and so I have a lot of time to think. I'm a huge fan of Vi and Jinx and the image gave me a new idea. Why is Jinx obsessed with Vi and having her chase her. I'm now sorely tempted to write it up as a short story but I wanted to compare notes first and see if anyone thinks the idea is sound or not.

Jinx and Vi are sisters, but not by blood. Specifically they are step sisters that are orphaned at a young age and forced to survive on the streets of Zaun. This being extra treacherous with their loose ethics since I suspect some of the crazier scientists there likely view orphans as prime gunea pigs. To try and protect her younger sister, Jinx plays tag with vi, trying to teach her to be fast and nimble to avoid capture by the cops (being theives that steal food, etc) and scientists and their thugs. This becomes Vi's favorite game and it's not until she's older does she recognize the value in it. As they grow up, they form their gang in zaun, with Vi as the leader and Jinx as her enforcer. Vi being the more tactically minded while jinx is the more aggressive. However, Vi gets captured by the professor (the one that is credited as creating blitzcrank/rebuilding urgot, and stole viktor's advances) to be experimented on with the help of a pre-wolf warwick. Jinx, realizing there's no way to save vi from the outside, allows herself to be captured. The two are experimented on, given some physical enhancements but mostly focused on the brain, trying to break out mechanical aptitude as well as tweaking other aspects of their mind.

For political reasons, the professor is invited to the airship races between zaun and piltover during a key part of the experiment so he is forced to bring them along on his ship. During the commotion, Jinx siezes on the opportunity to toss Vi overboard when they get near shore in an effort to escape but is unable to follow. The experiments were largely successful, but unbeknownst to jinx, it has erased her memories. Jinx on the other hand continues to be experimented on, though the experiment continue to make her more erratic as they focus on augmenting her adrenaline and endorphin regions of the brain. During one such adrenaline high, Jinx is able to escape, stealing weapons from the professors thugs and causing a lot of damage to his lab and personnel, causing several large explosions which Jinx finds...enjoyable. However, she is focused on one thing, getting her sister back.

Seeing a paper showing the new deputy of piltover is her sister, she travels there to try and find her. Upon trying to meet her several times and realizing that Vi no longer recognizes her, the unhinged Jinx starts to put things together, even trying to explain to Vi once before being simply written off as a psycho. So Jinx devises a plan. The only way to get her sister to remember her is to remind her of their childhood. And so the destructive game of tag begins...