Ep. 11: Masahito's traps and Ryouta's return lead to a confrontation where Shiki spares the villain.
Masahito's BIM detonation appears to kill Ryouta, causing Himiko to lose her will to fight until Shiki intervenes and wounds Masahito. Masahito utilizes building traps to lure them, having previously hidden a bomb in a case which Himiko deduced. He strikes Shiki with a bomb while Himiko regrets not telling Ryouta she is the Himiko he knew. Ryouta survives and uses a non-detonated cracker-BIM to chase Masahito into another trap. Masahito activates the device, but Ryouta moves it, injuring Masahito. Shiki appears to kill Masahito but alters her blade's path, stating she will never forgive him. Later, Himiko and Ryouta discuss Shiki's mercy. In the epilogue, they search for chips on corpses but find three missing. Ryouta suspects Kiyoshi, who turns against them as a homing-BIM approaches.
Episodes
- Ep. 7 · Ryouta confronts Masashi and Souichi while investigating Himiko's true identity.
- Ep. 8 · Sakamoto and Himiko encounter Shiki Murasaki while discussing survival strategies in Btooom!
- Ep. 9 · Ryouta and Himiko confront Masahito's deception while battling Nobutaka and Hidemi for resources.
- Ep. 10 · Ryouta retreats from Nobutaka, recalling their past betrayal before Masahito's hidden BIM explodes.
- Ep. 11 · Masahito's traps and Ryouta's return lead to a confrontation where Shiki spares the villain.
- Ep. 12 · Kiyoshi's hallucinations lead to a tragic end involving Ryouta and Himiko