When I read fanfics, and i see Y/N, I most of the times read it as "Why Name" in my head.
Like I don't hear it as my first name.
An example:
"What is your name?" Wonho asked.
"Uhm... it's Y/N." you responded shyly.
"Y/N? That is the most beautiful name I have ever heard." he said with a smile.
Your cheeks turned as pink as Peppa Pig.
"So, Y/N, do you want to go on board on my motorboat?"
How it sounds like to me:
"What is your name?" Wonho asked.
"Uhm... it's Why Name" you responded shyly.
"Why Name? That is the most beautiful name I have ever heard." he said with a smile.
Your cheeks turned as pink as Peppa Pig.
"So, Why Name, do you want to go on board on my motorboat?"