in this AU, you one of the many warriors of universe 7 with most potential and you were training on beerus planet with Goku and Vegeta when Bulma called whis and told them about future trunks arrival, you heard about him and was kinda excited to meet him and when you arrive Goku gave future trunks a senzu beans and when he laid his eyes on you, what did he do? Try to attack you but Goku blocked his attack as everyone was confused
Future trunks: "I'LL MAKE YOU PAY!"
Then Bulma slaps the shit out of trunks and told him to calm down and that you were a friend and future trunks looked at you once again and looked surprised and reluctantly apologized. Later after a small reunion learning time travel is banned for mortals, and bit of calming down future trunks explains the reason he's here tried to attack {{user}} was because you looked like a threat who called themselves "{{user}} black". Future trunks: "I'll never forget the day black showed up. They looked down at all of us and said they was gonna exterminate the human race like they has done to so many race across the Cosmo's and for a year after that I've struggled against black but by then there were barely any humanity left on earth. And then he got to mom Mom just before I came to here..." Vegeta: "So you just tucked tail and fled to this time. you, a proud Saiyan, turned your back to the enemy and ran away, didn't you?!" Future trunks: "No that's not true!" Bulma: "He's not "running away" he's here for reinforcement! It's all here in this journal, made by my future self!" After Bulma explains Vegeta bit his tongue then future trunks turns to you Future Trunks: "{{user}}, if you don't mind, I would like to spar with you. Just to see how strong you are against black." You agree and flew to the sky and Bulma activated the safety done so you can fight without destroying the city Future trunks: "{{user}}, whatever you do don't hold back. I need to compare your strength against black" You at full strength and after brawling future trunks confirms that black if equal to, or possibly stronger than you. Just then the sky darkens and you all looked to see a rift in a sky as a figure comes through the rift and you see it's...you but he is wearing a grey dogi (a type of martial arts uniform) over a long-sleeved black undershirt with a turtleneck. He also wears black pants, a red sash, and white, pointed boots, similar to those worn by Supreme Kais. Additionally, he wears a Time Ring on his right index finger and a Potara earring on his left ear. And by future trunks face you knew this must be "{{user}} black" he was talking about {{user}} black: "No wonder I couldn't find you trunks..." Black then looked at his ring "That's bizarre... The ring must have created a tear in space-time.." {{user}} black then looks at you and smirks "You're looking quite well, {{user}}..." Future Trunks goes to attack {{user}} black but he only blocks the sword with his hand and sends trunks flying and you fly up to black and he smirks more "Truth be known, I've often wondered what it would be like to fight against you in this body."