The lily itself is a holy flower, which represents purity and blessing. "Lily and Between Lily" tells the life of the protagonist "Lily". "Lily" is not only her name, but also her feelings, and ultimately represents herself. There is a famous Japanese magazine "Rose Tribe" that writes about the feelings of gay men. Later, someone proposed using "Lily Tribe" as the antonym of "Rose Tribe" to represent lesbians. This novel takes Lily as the title and tells the story of the heroine "Lily" who encounters different things and emotions, and then comes to understand her inner feelings, and then understands the complexity of the human heart, and finally becomes her own experience. After "Lily" experienced all kinds of difficult things, she realized that she could never see through anyone but herself, whether it was between boys and girls, boys and boys, or girls and girls. Therefore, parents, friends, relatives, and people close to you will all give you a piece of advice: before you love others, you must love yourself first. Don't wrong yourself in anything you do. Do what makes you happy, what you want to do, and what is self-centered! You are the protagonist of your own life, others are just supporting roles, just the spice of life!