Shangri-La Frontier is a current popular ongoing anime about a fully immersive VR experience. Unlike anime like Sword Art Online, Sunraku is free to leave the game at any time. However, the game introduces challenges of its own in the form of the Seven Colossi. These unique monsters are integral to the game's plot and are some of the most difficult bosses in the game. Yet, Sunraku challenges them anyway. He fights several of the Seven Colossi with and without help, to varying effect, like Lycagon the Nightslayer. Ultimately, these elusive bosses have become more and more prevalent as the story continues to move forward.

Just as Sunraku receives new information on Ctarnidd of the Abyss, it is revealed that someone has challenged another Colossi alone. Just like Sunraku, Akane Akitsu challenges one of the Seven Colossi and gets sent to Rabituza. However, the fact that she was accompanied by...