"Imōto Sae Ireba Ii. @comic" is a manga adaptation of the light novel series written by Hirasaka Yomi and illustrated by Kantoku. The story revolves around Itsuki Hashima, a successful light novel author whose works often feature younger sisters as central characters. Despite his professional success, Itsuki struggles with personal insecurities and the pressures of his career. His life is intertwined with a group of fellow writers and friends, each dealing with their own challenges and aspirations.

The narrative explores the dynamics of Itsuki’s relationships with his peers, including Nayuta Kani, a prodigious and eccentric novelist who harbors romantic feelings for him, and Haruto Fuwa, a close friend and fellow author who often provides comedic relief. The group frequently gathers at Itsuki’s apartment, where they discuss their work, share personal struggles, and engage in humorous and heartfelt interactions. The story balances comedic moments with deeper explorations of the characters’ emotional lives, particularly their struggles with creativity, self-doubt, and the demands of the publishing industry.

A significant subplot involves Chihiro Hashima, Itsuki’s younger sister, who lives with him and takes care of the household. Chihiro’s presence adds a layer of familial warmth and complexity to the story, as her relationship with Itsuki is both supportive and occasionally strained. The series also delves into the lives of other supporting characters, such as Miyako Shirakawa, a college student and aspiring writer, and Ashley Ōno, a translator who becomes involved with the group.

The manga captures the blend of humor, drama, and slice-of-life elements present in the original light novels, offering a detailed look at the creative process and the personal lives of its characters. Through its episodic structure, the series provides insights into the challenges of writing, the importance of friendship, and the pursuit of personal and professional fulfillment. The interactions between the characters drive much of the narrative, creating a balance between lighthearted moments and more introspective themes.