Matcha Hazuki is a Japanese manga artist and original creator, best known as the author and illustrator of the series One Week Friends. Born on August 13, 1990, Hazuki chose the pen name as a combination of the month of birth, which in the old Japanese calendar is Hazuki, and a personal fondness for the natural imagery associated with matcha green tea. The creator is recognized for a body of work that explores the fragility and persistence of human relationships, primarily serialized in Square Enix publications.

Hazuki made a professional debut with the one-shot Kimi to Kamihikooki to, published in 2011. This was followed by the serialization of the flagship work, Isshuukan Friends, which ran in the magazine Monthly Gangan JOKER from 2012 to 2015. The series was collected into seven tankobon volumes. Following the conclusion of that story, Hazuki launched Boku ga Boku de Aru Tame ni, which was serialized in the same magazine from 2015 to 2020 and also compiled into seven volumes. In 2021, the creator returned to the universe of the most famous work with Sono Ato no Isshuukan Friends, a sequel series continuing the narrative of the original characters.

One Week Friends is the project that brought Matcha Hazuki significant recognition, functioning as both the original manga creator for the series and, in its various adaptations, the credited source material author. The story follows Yuuki Hase, a high school student who befriends a classmate, Kaori Fujimiya, only to discover that every Monday, her memories of her friends are erased. The manga inspired a twelve-episode anime television series in 2014, a Japanese live-action film in 2017, and a Taiwanese live-action television series in 2022. The manga has been published in English by Yen Press.

Across these works, Matcha Hazuki consistently focuses on themes of memory, social connection, and the quiet effort required to maintain relationships. The artistic identity is defined by a gentle, expressive art style that emphasizes character emotion through facial expressions, balancing melancholic situations with sincere warmth. The narratives tend to avoid sensational drama, instead focusing on the internal emotional landscapes of young characters navigating friendship, kindness, and the fear of being forgotten. In the industry, Matcha Hazuki is recognized for creating a successful multimedia franchise centered on a high-concept emotional premise, demonstrating how a focused, character-driven shonen manga can achieve broad appeal across different formats.