Natsume Hasumi is a manga artist known for illustrating the manga adaptation of the light novel series An Observation Log of My Fiancée Who Calls Herself a Villainess. This work represents Hasumi's most prominent credit to date and is the basis for an upcoming anime television adaptation.

Hasumi is the illustrator of the manga version of An Observation Log of My Fiancée Who Calls Herself a Villainess, which is based on the original light novel series written by Shiki and illustrated by Wan Hachipisu. The manga was serialized on AlphaPolis' Regina manga website from May 7, 2018, to August 6, 2021, and was compiled into six volumes. Hasumi also illustrates the sequel manga, An Observation Log of My Wife Who Calls Herself a Villainess, which began serialization on March 29, 2022.

Beyond the Observation Records series, Hasumi has worked on other manga titles. These include Bloody Junkie, published in 2012 and 2013, and Shuuen no Elysion, published from 2015 to 2016. Hasumi has also contributed to an anthology work, Persona 5 Dengeki Comic Anthology.

The anime television series adaptation of An Observation Log of My Fiancée Who Calls Herself a Villainess is scheduled to premiere in April 2026. The adaptation was announced in May 2025, and upon the announcement, Hasumi expressed excitement about seeing the characters brought to life in animation. The anime is directed by Junichi Yamamoto at Ashi Productions, with series composition by Akiko Inoue and character designs by Miki Matsumoto.

Hasumi's artistic work on the manga has been published in English digitally by Alpha Manga, which describes the story as a unique romance about a prince who becomes intrigued by his fiancée's claim that she is a villainess reincarnated from an otome game.