"Okaasan Itadakimasu" is a Japanese manga and anime series written and illustrated by Yumi Tamai. The title translates to "Thank You, Mother" in English. The series revolves around the life of a young girl named Shiori Amaya, who is a fifth-grader and has a unique condition that makes her look like a much older woman. The anime adaptation of the series gained popularity worldwide, and the term "Okaasan Itadakimasu Full" refers to the complete or full version of the anime series.