Reverse Isekai AU headcanons: Tesla! (And some Knives too I guess)
Quick refresh: TriMax Knives, Streamer, lives like a hermit in the little apartment suite above the garage. Vash and Wolfwood are from Tri98.
Since Knives has his successful career as a streamer, the dude is loaded. When he's not giving to charities, he often helps with the ever expanding family your house seems to be amassing.
One person he's extremely particular about finding is Tesla, once she arrives. That's right, bby, we found Tesla!
You and Wolfwood decided to do some charity work at a local orphanage, (He misses his kiddos from the orphanage a lot) and she was fighting off one of the workers there, insisting she needed to leave. When you stopped her, she introduced herself as Tesla, the worker insisting her name was something else.
Tesla has been found on the orphanage doorstep as an infant, but only 2 years ago. She had grown to age 12ish since then, and after about a year and a half, she regained her memories of being on the Seed ships.
It's technically unclear if this is TriMax Tesla, or TriStamp Tesla, but to Knives, he doesn't care about such details. This is his older(?) Sister, and he's gonna give her the best life possible, now that Tesla was adopted, and she lives in the house with y'all.
Once Tesla got her name changed from the one given to her by the orphanage to her real name, she decided on taking the name Tesla Millions Saverem, sharing the same middle and last name as Vash.
Tesla is quite the active kid. Appearing the age of 12, she quickly wanted to become a part of public school life.
She maintains a high GPA, she has a few close friends, she's a state tennis and basketball champion, and she's the student council president.
She does, however, have a hard time making friends considering a lot of kids want to befriend her to get closer to Knives, aka Imperium the streamer. Although Knives constantly states he's not a kid friendly channel, it doesn't stop unsupervised middle schoolers from watching his streams.
Although Livio (TriMax) tends to be the one to pick her up from school, on occasion, Knives' White 1959 Chevy Impala Sport Coupe, with sky blue pinstripes, will sit outside the school, waiting to pick up Tesla. Most kids are too intimidated by Knives' resting bitch face to actually approach him. Some kids will be able to muster out a "I like your car, Mr. Imperium!" To which he then gives his charming smile, and thanks them.
Surprisingly enough, Knives originally didn't want to even have a car, because they pollute the planet, and it only keeps the Earth in decline, but after Wolfwood was watching YouTube videos about classic muscle cars, he knew he had to get his hands on one.
Knives and Wolfwood spend time in the garage together, working on their car and motorcycle, usually insulting each other in alphabetical order. Things like, "Ya know, Spoons, you're an absolute asshole." "That's rich, coming from my brother's bitch." And down the alphabet they go.