Konoha Inoue is a high school student distinguished by short brown hair, light brown eyes, and a frequently noted feminine appearance. During middle school, he authored the novel "Sora ni Niteiru" (Looks Alike to the Sky) under the female pen name "Miu Inoue," cultivating an air of mystery around its creation. The novel achieved critical acclaim, winning a prestigious award and becoming a bestseller, later adapted into drama and film. This unexpected success triggered severe stress, causing Konoha to withdraw socially and abandon writing. His emotional state deteriorated further when his beloved childhood friend, Miu Asakura, attempted suicide by jumping off the school roof before his eyes, explicitly blaming him for her despair. This event compounded his trauma, resulting in prolonged depression and social isolation.

Entering high school, Konoha sought a peaceful existence devoid of emotional upheaval. He encountered Tohko Amano, an older student with the unique ability to consume literature by physically eating books, beneath a white magnolia tree. After witnessing her secret, she compelled him to join the Literature Club. As the club's sole members, Tohko assigned Konoha daily writing tasks to create "snacks" for her consumption. Initially resistant due to his traumatic past, Konoha gradually resumed writing solely for Tohko. He developed a deeply trusting bond with her, revealing his true self—characterized by a deadpan demeanor, bluntness, and occasional bitterness—exclusively to Tohko, while maintaining a gentle, friendly facade with others.

Konoha's life became enmeshed in solving literary mysteries presented to the club. In one instance, he ghostwrote love letters for classmate Chia Takeda, leading to a complex investigation involving a deceased archery student and themes from Osamu Dazai's works. His traumatic past resurfaced dramatically when Miu Asakura reappeared, confessing her initial suicide attempt was staged. She manipulated Konoha, isolating him from friends including his girlfriend Nanase Kotobuki, and nearly convinced him to join her in a dual suicide. Tohko intervened, preventing their deaths. Miu later staged another suicide attempt by jumping in front of a truck, suffering injuries that induced a temporary childlike regression. Konoha left school to care for her, though her condition was later revealed as another deception. Tohko resolved the conflict by explaining "Campanella's wish"—a concept referencing Kenji Miyazawa's works symbolizing Miu's yearning for unconditional love. Konoha reconciled with Miu, affirming their enduring friendship.

Following Tohko's graduation, Konoha assumed the presidency of the Literature Club. He published a novel titled "Bungaku Shoujo" under his former pen name, using it to confess his love for Tohko and reject all adaptation offers. In the Minarai spin-off series, narrated by new character Nano Hinosaka, Konoha exhibits increased maturity yet retains emotional vulnerabilities. He grapples with shifting romantic feelings, unintentionally causing hurt to others like Hinosaka, who develops feelings for him. His lingering attachment to Tohko fuels internal conflict, yet he supports Hinosaka, reflecting his ongoing personal growth. Years later, he maintains a writing career while cherishing memories of his time with Tohko.