Manga By June 2021,
The Case Study of Vanitas had over 5.5 million copies in circulation. Upon its release, the Japanese volumes appeared in charts from
Oricon. Critics enjoyed the handling of Vanitas and setting and praised the mix of action, humor and adventure, while at the same time praising his relationship with Noe. Melina Dargis from
The Fandom Post also wanted the manga to be adapted into an anime in 2017. The focus on romance between arcs was praised for its handling of Vanitas as hilarious character considering how poorly he reacts to his feelings towards Jeanne.
Manga News praised the handling of Vanitas through his tragic backstory, and noted that Mochizuki's handling of narrations is hard to follow. In a following review,
The Fandom Post enjoyed the mix of action and multiple events occurring in the manga's seventh volume and that while the art was not that detailed, the action scenes made up for it.
El Palomitrón said while there is no
boys' love between the two leads due to the focus on other, more explored relationships, the reviewer found the connection between Vanitas and Noé deep and comparable to the one between Vanitas and Jeanne. The art was praised by
Otaku USA for its handling of a steampunk setting as well as the characterization of the title character.
Manga News enjoyed the multiple character designs, spanning from
bishonen types to built bodies who interact together. Although the manga is published in a magazine, the art was compared with "beautiful shojo-esque art style" by
Comic Book Resources, making it equal to
Pandora Hearts.
The Fandom Post claimed the art was "stunning", praising the details of every page, including the fight sequences. The handling of vampirism between Jeanne and Vanitas as well as Dominique and Noé was listed by Caitlin Moore from Anime News Network as the best moment in anime from such year due to amount of sex appeal they portray directly.
The Fandom Post agreed in regards to the sex appeal featured during the episode where Jeanne sucks Vanitas' blood, comparing it directly to sex, hinting it as an example to why their misrelationship could progress in following episodes of the series.
The Fandom Post found the early fight scenes of the series were the most appealing parts of the series based on how unpredictable Vanitas was, especially when dealing with Jeanne, but the series was less eventful in other areas where there was criticism over the handling of science fiction elements. Several reviewers focused on Vanitas' relationship with the vampire Jeanne. Vanitas forcing a kiss with her was criticized as being inappropriate as comedy. The massive violence displayed in the series' fifth episode resulted in
Funimation warning sensitive viewers to avoid watching it. Bones' animation has been generally praised for making the settings and character details appealing alongside
Yuki Kajiura's music.
Natsuki Hanae's performance as Vanitas brought major praise from
Anime Feminist for how he conveyed different sides of Vanitas' twisted personality to the point he comes across as "peak trash".
The Fandom Post noted that Vanitas and Jeanne's comical date is more enjoyable than the main plot which is later foreshadowed. The series' second half also earned a positive reception from Anime News Network writers due to the character arcs of the main cast as well as the production value, to the point that they considered it to be one of the best anime of the Winter 2022 season. In 2022, the series was nominated for the
6th Crunchyroll Anime Awards in the category of "Best Fantasy". The characters of Vanitas, Noé, and Jeanne were popular on Anime Trending, with Vanitas and Jeanne being nominated in the couple category in 2022. The series was also nominated for the
7th Crunchyroll Anime Awards in the "Best Fantasy" category in 2023. ==See also==