'It's a Little Late, but I've Fallen in Love With My Childhood Friend' follows Hikari, a high school student who finds herself falling for her childhood friend in this Japanese web novel. As their interactions take on a romantic yet tense quality, Hikari grapples with the courage to express her emotions. The novel delves into genres such as comedy, drama, Josei, romance, and slice of life, featuring themes of childhood love, love triangles, and a lovable female protagonist in a modern-day setting. Adapted to manga, this story captures the essence of youthful romance and emotional growth.