Fueled by Deckerdramon's death, the restored bond between Kiriha with Taiki and Nene creates Shoutmon ×7. Although Shoutmon ×7 manages to destroy Gravimon, it is soon revealed, that Gravimon can regenerate himself if his heart is kept safe, by Hi-Vision Monitamon after he sneaks into the castle to investigate before being captured. As Taiki DigiXros Cutemon with Dondokomon, Knightmon, PawnChessmons, Persiamon, ChibiKamemon and Jijimon to form G-Cutemon to hold off Gravimon's army, Nene and Kiriha sneak into the Death General's castle to free the captured Hi-Vision Monitamon and find Gravimon's heart. However, Gravimon expected them to pull off such a plan and DigiXros his remaining forces to assume Darkness Mode while revealing that he secretly transferred his heart into Taiki's left arm during the first battle. Agreeing to Gravimon's demands, Kiriha gives up his Xros Loader in order to save Taiki's life. But when Gravimon attempts to kill Kiriha, Taiki shields his friend while ensuring the Death General would inflict damage on himself. Removing his heart from Taiki, Gravimon unknowingly allows Shoutmon ×7 to heavily wound the heart before Kiriha personally destroys it, marking the end of both Gravimon and the battle, leaving the Xros Heart United Army one more land and then the Bagra Army's Headquarters.
Gravimon se ve sorprendido por X7 que lo ataca inmediatamente. Gravimon usa ataques de gravedad que complican a X7. Los chicos dan más poder con su Xros Leader y así X7 ataca violentamente hasta incendiar al enemigo.Todo parece acabado pero Kihira se siente muy mal por la muerte de Deckerdramon. Taiki siente que fue lastimado (se hinchó una parte del brazo), aún así aún no cambia la bandera en señal de haber derrotado al enemigo.
לוחמי ההתאחדות ממשיכים במאבקם מול הגנרל האפל גרבימון, ומשתמשים באיחוד החדש שהם קיבלו מהחיבור החזק ביניהם - שאותמון כפל שבע! אולם גרבימון מתברר כבלתי מנוצח, והחבורה צריכה למצוא דרך להביס אותו למרות הכל.
