Fan service is specifically meant to please the audience, but it doesn't have to be overly cringe-inducing or distasteful. It can be a neutral element to the story that makes it more relatable, and it can even be quite cute. They are scenes and moments that are meant to feel relatable to the audience, make them blush, and have them giggling and kicking their feet.
Source：https://www.cbr.com/how-anime-does-fan-service-without-showing-skin/
