Thanks for the translation, there are actually 6 volumes and I just finished reading them all a few days ago. Solid 8-9/10, somehow Mary reminds me of Bai Jin (Faceless) lmao. Hope Kodansha give us English physical volumes too someday.
@ beggarSoChan2020l2r3 although this manga is drawn by Paru, dude you have really good taste by reading Be Growl, Pen! Hope you'll like to read Karakuri Circus and other Kazuhiro Fujita sensei's works (because he's friends with Kazuhiko Shimamoto).