A genius player hardens his resolve!! "BTOOOM!"--the death game that forces real people to kill each other with explosives--charges into its final stage! Ryouta unexpectedly runs into his former senpai Tsuneaki Iida, now one of the Tyrannos Japan masterminds supervising the deadly contest on the island. Iida reveals the true nature of the bomb game and proposes a surprising plan to Ryouta!! Then the few remaining players instigate a final battle to secure their escape. Will Tougou and Sakamoto, both planning to get off the island in a team of four, end up in a three-way fight to the death with Oda?!

The Sanctuary arc comes to an end!! While lying unconscious on a beach, Ryouta is approached by a mysterious little girl, Kaguya, who later leads him to the Sanctuary, where seven "BTOOOM!" players have been eking out a peaceful coexistence. But Ryouta's arrival means there are enough chips to send one player home, and a string of ghastly murders follows!! The killer cuts down player after player, and Ryouta soon discovers that he has fallen into the villain's clutches, only to escape by the skin of his teeth! As the curtain falls on the battle of wits between Ryouta and the murderer, another rises on the most ferocious fight the Sanctuary has ever witnessed!!

In this "bad ending" conclusion to the story, Ryouta casts aside his history with Oda and, with it, his hesitation, as he squares off against his former friend and rival, who has taken Kaguya and Uesugi hostage. Meanwhile, Himiko and Kira hatch a plan to save their captured allies. But Ryouta's decision will have dire consequences for everyone involved, and even he might not emerge from this final battle unscathed...Who will be left standing as the curtain falls on this explosive drama?!

First rule of finding yourself in a hole: stop digging! Too bad Shinji can't seem to take that advice--not as long as he's in debt to the Kaji Detective Agency, while doing all the work of its lazy proprietors. And Shinji's situation just keeps getting worse, as he discovers a rivalry he didn't know he had, not to mention a past he had thought was gone years ago.

The surviving players continue to struggle against one another in a desperate attempt to survive in the latest installment of BTOOOM!

The sudden death of Mishima has thrown everyone trapped in this strange facility—but most of all his former student Nao—into despair. They have no choice but to keep searching together for some way to escape, but paranoia and doubt are beginning to take hold of them...

The battle intensifies on all fronts!! With multiple forces at work, the situation surrounding "BTOOOM! GAMERS" takes a turn for the complicated. In the control room, a psychological battle between Tyrannos Japan and Iida heats up. Online, cyber warfare ensues between the foundation, which is attempting to hack the system, and Perrier, who erects a firewall. And then, on the island, the drone unit, led by Xaviera, clashes explosively with Ryouta and his team, which holds the line with BIMs. In three battles that won't easily be won, who holds the key to the overall war...?