Tanaka-san is a legendary hotel man (concierge), and after his death, he became a legend in the underworld. In the underworld, Mei works at the dilapidated Hotel Helheim. It was once a glorious hotel, and one where Mei has many fond memories. One day, Tanaka-san appears, ready to restore the Hotel Helheim to its former success. Mei will become the famous Tanaka-san's assistant, as he works to make Hotel Helheim a top-class underworld hotel! *Originally published in Jump Square as a 3-volume series from November 2014 to September 2015, the series was later republished under the Shonen Champion Comics label from December 2019 to January 2020. The volume count reflects the republished version, as it is the only one currently available.*

Hopeless pushover Iruma Suzuki has found himself in a devil of a predicament... His trashy parents have sold off his soul, and he now has to live and attend school in the Netherworld. But with his unique survival skills and doting demon grandfather’s support, Iruma will surely make it through this hellish experience. He'll just need to subjugate rival classmates, summon familiars, and more, all while never revealing that he's human... Easy as *aleph, bet, gimel*, right?

Shaoron Teufel is an ambitious demon who has enrolled in the demon school known as Babyls, aiming to become popular and join the Student Council. However, a number of trials await him as soon as he arrives! Being recruited by a shady division, summoning a familiar, participating in a flying test… Will Shaoron be able to stand out even more than the special student, Iruma-kun? A collaboration between *Mairimashita! Iruma-kun* and a popular Japanese YouTube channel, *We are the Main Characters of ◯◯!* - [We are the Main Characters of ◯◯! channel](https://www.youtube.com/channel/UCIZzHNbzlIskx3TxGznRyYg)

They'll hunt any monster gently, no matter how dangerous!! Gold and Silver are the expert hunter brothers!

Arcaspia, the "world of creatures," is home to all manner of mythical and fantastic beings - including the undead. To maintain order in Arcaspia and enforce laws upon these dangerous individuals, the Dead an Dead organization was formed. Notorious Dead an Dead agent number 666 Nico Alsbarn (colloquially known as "Legs Russo" for his perpetually blood-stained legs) takes on an undead invasion in this oneshot by Osamu Nishi!