Welcome to Demon School! Iruma-kun Vol 15

Osamu Nishi is a Japanese mangaka known for her work on "Mairimashita! Iruma-kun," which has been adapted into an anime series and has developed several spin-off series. She began drawing illustrations during her high school years, though she had no prior experience in manga creation. Despite this, she was highly interested in newly released manga and anime merchandise and often visited the Animate Toyohashi shop with friends on her way home from school. After graduating, she decided to try drawing manga and participated in the project Tokiwaso. Her first own work, "Shonen K," gained an honorific mention in the Jump SQ Monthly Awards and was published in Jump SQ Autumn 2011. Osamu Nishi is also the author of "Ichi the Witch". She has published numerous books, including manga and spin-offs related to "Mairimashita! Iruma-kun," and her works are available on platforms like Goodreads, where she has 91 books listed with over 17,000 ratings. She is also active on social media, particularly on X (formerly Twitter), where she has over 145,000 followers as of February 2023. She represents herself in her works and on social media as a yellow fluffy cat, which appears in the "Mairimashita! Iruma-kun" manga and anime series.