Lip is a pink tulip fairy belonging to the flower fairy species known as Fairilu, and she serves as the central character in the story. She was born from a Fairilu Seed in the magical world of Little Fairilu. When she was about to emerge from her seed, she initially struggled to open the Door of Birth, but received encouragement that helped her enter the world, and that moment left a lasting impression on her. Her appearance is characterized by long pink hair styled in pigtails, pink eyes, pointed ears, and wings that transition through shades of pink, yellow, and light blue. Her signature color is pink, and her personal magical incantation is Puru Puru Lip Puru.

In terms of personality, Lip is gentle and benevolent, with a tender heart that cares deeply for those around her. She is known to be somewhat shy and prone to tears, yet she possesses a resolute spirit that refuses to surrender even in difficult circumstances. Her determination is stronger than most, and she channels her emotions into her singing, using the power of her voice to lift the spirits of others and bring them comfort. She is described as generous and sweet-natured, always putting effort into her studies and trying her best to succeed at school.

Her motivation centers on growth and connection. As a student at Saint Fairilu School, she learns about the world around her alongside her friends, and her journey involves finding and passing through her own personal Fairilu Doors, which serve as tests that help fairies mature. Her dream is to become a Fairy Diva, a goal that reflects her love of music and her desire to inspire others through song.

In the story, Lip is the protagonist of the franchise. The narrative follows her everyday life in Little Fairilu, her friendships, and her adventures in both the fairy world and the human world, where fairies can meet human partners who support their aspirations. Across the three seasons of the anime, she remains the focal point, and her role expands to include experiences such as forming a deeper bond with those close to her and taking on a more supportive dynamic with certain other characters in later seasons.

Her key relationships include her close friends among the flower fairies: the cheerful and energetic sunflower fairy Himawari, the artistic and sensitive violet fairy Sumire, the hardworking and proud rose fairy Rose, and the sleepy yet gentle gentian fairy Rin. These four are her main companions at school and in her daily life. She also shares a meaningful connection with a human boy whose encouragement helped her at the moment of her birth, and she carries fond thoughts of him throughout her journey. In the third season, she acts in a sisterly role toward the star fairy Spica, and she develops romantic feelings for a fairy named Drop, who is the fairy form of that same human boy from a reimagined continuity.

Over the course of the series, Lip demonstrates clear development. She begins as a timid and tearful young fairy who doubts her own abilities, but through her experiences, friendship, and determination, she grows more confident and learns to rely on her inner strength. Her ability to sing and cheer others up becomes a defining trait, and she matures into a fairy capable of facing challenges with courage while still retaining her innate kindness.

Her most notable ability is her singing, which has the power to energize and heal those who hear it. As a flower fairy, she also has access to fairy magic, which she can cast by using her personal fairy key to open doors and perform spells. Her specific magical phrase is unique to her, and like all fairies, she grows each time she successfully passes through a fairy door that is meant for her.