Sunflower Field, also known as ひまわり畑, is a chilling Japanese web novel that follows the story of two siblings spending their summer vacation at their grandpa's house. As they play hide-and-seek in the sunflower field, a mysterious and eerie turn of events unfolds, particularly affecting the older brother. The novel belongs to the horror genre and features themes of a child protagonist, a male protagonist, a mysterious family background, and is categorized as a oneshot, providing readers with a suspenseful and captivating reading experience.