Mika Yamamori is a Japanese manga artist known for creating romance stories in the shoujo genre. She was born in Ishikawa Prefecture and made her professional debut in 2006 with the short story Kimi no Kuchibiru kara Mahou (The Magic from Your Lips), which was published in The Margaret magazine.

Her career began with a relatively smooth start, as her debut work was accepted by a publisher immediately. She later experienced the challenges of the industry when she worked on Sugars, a collection of short stories. For this series, she had to conceive a complete story every month, a demanding schedule that proved stressful and taught her the difficulties of the profession.

Yamamori is best known for several long-running series. Daytime Shooting Star (Hirunaka no Ryuusei) was serialized from 2011 to 2014 and became one of her most popular works. She followed this with Tsubaki-chou Lonely Planet (Tsubaki-chou Lonely Planet), which began in 2015. Her ongoing series, In the Clear Moonlit Dusk (Uruwashi no Yoi no Tsuki), started serialization in Dessert magazine in July 2020.

Several of her works have been adapted into other media. Daytime Shooting Star was adapted into a live-action film. For that production, Yamamori reviewed the screenplay and provided input on the casting, taking on a consultative role. She was ultimately satisfied with the actors' performances, which she found impressive and moving. In the Clear Moonlit Dusk has also been adapted. A television anime adaptation was announced, with a premiere scheduled for January 2026, and a live-action film is planned for release in the fall of 2026.

Yamamori has a distinct artistic identity. Her art style is described as clean and simple yet distinctive, with a talent for making ordinary scenes look charming and magical. She often uses a soft watercolor style for her manga covers, which feature intricate, close-up character illustrations in bright colors. In her drawing process, she pays close attention to details like the characters noses, facial contours, and body posture. She also makes a conscious effort to vary panel perspectives to keep the visual storytelling dynamic.

Regarding her creative process, she gathers ideas from films, novels, and suggestions from her editors. When developing a new story for Tsubaki-chou Lonely Planet, she started by creating the male lead character, Akatsuki Kibikino, before building the plot around him. The challenge was to create a male protagonist distinct from those she had already drawn in Daytime Shooting Star. Looking to the future, Yamamori has expressed interest in writing stories in other genres, particularly fantasy and boys-love manga.