"What better way to blend in in this world than as someone who already lives here?" you reasoned, as you prepared to possess Vi. Plus, her position as an Enforcer meant she had access that most civilians around here wouldn't have.
As the gauntlet began to glow, you were struck with the sudden urge to touch the gauntlet to her. "Maybe it needs physical contact to possess?" you thought, as you moved closer, trying not to be noticed while she moved the rubble and debris. "Moment of truth!" You pressed your hand against her back, and she began to turn around.
"Huh?" Vi started, preparing to pull away, before you suddenly felt yourself being pulled towards her. As you were pulled into her back, she grunted, "what the-" was all you heard before you were fully pulled into her body and blacked out.
***
You woke with a gasp, finding yourself lying on the ground, your muscles aching all over, and a mess of pink hair blocking your face. When you tried to move your hand, you found it weighed down by something massive around it. Looking down, you're greeted by... breasts?! Where did those come from... Vi. You'd done it - you'd possessed Vi! You looked past your new chest and confirmed your suspicions - your hands were encased in her massive Hextech Gauntlets. You felt the controls inside them, and tested them by wiggling your fingers, and making a fist.
"Awesome..." you said with a grin, which then grew wider at the sound of her voice. You pushed yourself to your feet, finding it surprisingly easy despite the weight of the gauntlets. As you stood to your full height, you realized that Vi was taller than you were, and also felt the strength of Vi's muscles at your command. No wonder she was able to wield these gauntlets so easily.
Speaking of gauntlets... what happened to yours? But just as you had this thought, you noticed a faint glow coming from inside Vi's left gauntlet. You peeked through the mechanisms to see that yes - yours had indeed materialized inside of Vi's somehow, wrapped around her hand as if it had always been there. But wait, it was glowing? And the glow was getting... brighter?
Suddenly, the light shot to your head, and you were almost overwhelmed by the shock, before you realized what it had done - you now had Vi's memories! Growing up with Powder, getting separated, meeting Cupc- Caitlyn, becoming an enforcer; everything! "Including," you thought with a slight smile, "confirmation of a certain relationship."
As you calmed down from the sudden influx of information, you looked around to realize that you were in luck - Vi had just finished up clearing the debris, and you remembered that she was then planning to head back to HQ to file an incident report, which you were unsurprised to learn she was actually hoping to pawn off onto Caitlyn. But, of course, now you were Vi, and the world of Runeterra was at your fingertips.