Episode 0 of Gatchaman Crowds Insight to be streamed on Hulu before the airing of the main series.

Life in the bustling city of Orario is never dull, especially for Bell Cranel, a naïve young man who hopes to become the greatest adventurer in the land. After a chance encounter with the lonely goddess, Hestia, his dreams become a little closer to reality. With her support, Bell embarks on a fantastic quest as he ventures deep within the city's monster-filled catacombs, known only as the "Dungeon." Death lurks around every corner in the cavernous depths of this terrifying labyrinth, and a mysterious power moves amidst the shadows. Even on the surface, survival is a hard-earned privilege. Indeed, nothing is ever certain in a world where gods and humans live and work together, especially when they often struggle to get along. One thing is for sure, though: a myriad of blunders, triumphs and friendships awaits the dauntlessly optimistic protagonist of this herculean tale. [Written by MAL Rewrite]

Yashiro is the young leader of Shinseikai and the president of the Shinseikai Enterprise, but like so many powerful men, he leads a double life as a deviant and a masochist. Doumeki Chikara comes to work as a bodyguard for him and, although Yashiro had decided that he would never lay a hand on his own men, he finds there's something about Doumeki that he can't resist. Yashiro makes advances toward Doumeki, but Doumeki has mysterious reasons for denying. Yashiro, who abuses his power just to abuse himself, and Doumeki, who faithfully obeys his every command, begin the tumultuous affair of two men with songs in their hearts and no wings to fly. (Source: Juné)

Bundled with the limited edition sixth manga volume.