After watching Oshi No Ko, I had an idea in my head and this story was born to answer the question - What if Ai had an assistant ?
This story may change some details that are not like the original and a lot of manga pages to reduce fatigue, so pleas...
???: Looks like you're having a hard time...Let's pay
The mature woman swiped her bank card and paid for Mori
Cashier: Thank you, customer ?
Mori: Why did you do that?
???: We'll go to a quiet place to talk with me...
At an alley
Mori: Now tell me, why would you pay a stranger like me ?
???: First, I'm a successful businesswoman, second that's me to repay you for saving us last time
Mori: But...Hazz...Okay, that's true but how do you know I'm a highway hero ?
???: Fufu...Because of your helmet...
Mori: What ?
???: Actually, from the event, I sent someone to gather information about the highway hero and I learned that our people managed to film the motorcycle with the same helmet as the highway hero. revealing and even more surprising that you showed up and put on your hat and got on your motorbike is enough to prove it ^^
Mori: Ehhhhhh....No wonder I feel like someone is watching me, but I didn't expect it to be you
???:: After many traces and clues, I also concluded that it was you