At first Enix started simple by publishing books about Dragon Quest, most notably strategy guides, while also continuing its relationship with Shueisha to launch Dragon Quest: The Adventure of Dai in late 1989, which was an original series by Riku Sanjo (story) & Koji Inada (art), with Yuji Horii supervising it. However, Enix knew that for it to truly succeed in book publishing it needed to have a manga magazine of its own, & while it did initially publish a series of four-panel manga based on Dragon Quest in 1990 (that'd later become its own, multi-game series of works), it was on March 12, 1991 that Enix truly got into the manga business with the release of the very first (April) issue of Monthly Shonen Gangan; the magazine would always release on the 12th of every month. The name of the magazine was said to be a reference to the command "Gangan Ikouze" first seen in 1990's Dragon Quest IV, which has your party automatically use their most powerful abilities on the enemy, regardless of MP cost; eventually the command would be localized into English as "Show No Mercy!". Over the course of the next 35 years Monthly Shonen Gangan would become a home for a variety of manga, some of which have gone on to become iconic works, others simply the starting points for mangaka who'd become more well known later on, & even a number of manga that were based on various pre-existing IP, whether that be anime, video games, & whatnot.
The history of Shonen Gangan, however, also has its own ups & downs, as a major exodus from within Enix's publishing division in 2001 would result in the creation of rival publishers & magazines, the size of Monthly Gangan itself would notoriously exceed over 1,000 pages at points (with Enix even jokingly advertising not to drop an issue on someone), Enix would later merge with Square to form Square-Enix, and it's a history that admittedly isn't as well known in English, especially when compared to the likes of its most well known rivals, i.e. Jump, Magazine, Sunday, or even Champion. So, to celebrate the 35th Anniversary of Monthly Shonen Gangan's debut, I'm dusting off the ol' Ages of Jump format as we go over the history of Shonen Gangan by way of what (I can tell) look to be its most iconic/notable manga. This will be a six-part series comprised of three "eras" that I've (admittedly) determined primarily based on the life of arguably Gangan's most iconic manga around the world, but it still results in a roughly even spread where each "era" takes up ~10-11 years, as this series technically will only cover up to 2022.
So, without further ado, it's time for us to "Show No Mercy" as we start with the first half of Monthly Shonen Gangan's "Original [United] Era". Gangan Ikouze!




