If you are looking for sweet romantic storylines featuring girls with this aesthetic, here are notable examples from film and literature: Mitsuri Kanroji - Kimetsu no Yaiba Wiki
In the FNaF universe, "Pigtail Girl" is a neighborhood child who appears in FNaF 4 . Her relationships are primarily theoretical rather than romantic: Sweet Loving Sex with a Pigtail Girl Free Download
She is often seen as a neighborhood bully or acquaintance who teases the main character. She warns him about the animatronics coming to life at night and hiding bodies, which may either be an act of genuine warning or a cruel playground story to scare him. If you are looking for sweet romantic storylines