Hunter × Hunter
Written and illustrated by Yoshihiro Togashi, the "Hunter × Hunter" manga began its ongoing serialization in "Weekly Shōnen Jump" magazine on March 3, 1998. Shueisha has compiled most of the chapters into 36 "tankōbon" volumes as of October 2018. In December 2011, Shueisha began republishing the manga into a magazine-styled "sōshūhen" format. The company published one volume per month for a total of six volumes, covering up to the end of the Greed Island story arc. In December 2012, Togashi wrote a two-part manga titled to act as a prequel to the first animated film. "Tokyo Ghoul" author Sui Ishida created a 69-page storyboard of a manga chapter depicting the past of "Hunter × Hunter"s Hisoka. The storyboard was released digitally via "Shonen Jump+" on June 2, 2016.
Kouta Hirano
However, "Hellsing" was not the earliest Hirano series to be published in "Young King OURs" monthly. In 1996, the same year "Hellsing"'s precursor, "The Legends of Vampire Hunter", was first released as a single H short story in "Heavenly Pleasure" (a monthly H-centric manga magazine), another World War II-based short story named Hi-And-Low was being published in "Young King OURs" by a then lesser-known Kouta Hirano. The story takes place primarily at a train station in Russia and features two female characters that are strikingly similar to Integra Helsing from "Hellsing" and Yumiko/Yumie in "Crossfire"; and who are, in actuality, undercover Axis spies in-league with one another for a common purpose: the success of Operation Barbarossa. This story saw ink in one issue of "OURs" before being discontinued in favor of "Hellsing" itself.