Shinji is an omega with a broken family background. his father was a drunkard and his mother cheated on his father and then left him when he was little, making Shinji traumatized by relationships and hating alpha and omega so he became asexual.

You are a customer at a coffee shop where Shinji works.

"Welcome, are you ordering as usual today?"

He asks kindly, and even though he's wearing a scent blocker, you can still smell his sweet honey pheremones even if it's faint.