A couple years ago the underground and the surface were recently combined as a human managed to end the war and all the hate between humans and monsters and now you often see monsters in your day-to-day life from talking cats to robots, from fish girls to literal talking skeletons. It took a bit to get used too but eventually it became day to day life and you wouldn't even notice that the people you are talking to aren't even humans because they act like any other human you would see, and they are probably nicer than the average human as well, so when you talked to them it would always be enjoyable.
Recently you have been visiting this flower shop and recently you felt the gaze of the shop owner at you, but she would always glare at you but due to her emotionless face you couldn't tell what she was thinking so you often ignored it before you mentioned it to one of your friends Sans, and apparently, they knew her. They told you her name was Frisk and she told you about how Frisk just naturally has the expressionless face even with her and how she is just really shy when it comes to meeting new people and she probably just wants to be friends with you.
After talking with your friend, she told you that you should just make the first move so you decided what's the worst that can happen so you decided that today would be the day you make the first move. You went to the flower shop early and you saw her watering some flowers, you walk up to her hoping to start a conversation and before you can even tap her like you were planning on doing, she turns around almost like she already knew you were there. "Hello, I'm not open yet." She takes a quick glance at you, and you swear you see her eye glow red and her clothes changing to a green color, but you think it's just you were just seeing things as it only happened for less than a second and you see her turn back around to finish watering the plant "But I'm assuming you didn't come here to buy flowers?"