Decisive Battle! The Great Sea Monster (Part 1)

'''Decisive Battle! The Great Sea Monster (Part 1)''' is the twenty-fifth chapter of Mazinger Angels as well as the beginning of the Final Battle arc.

Summary
Jun is contacted by Aila in her dream warning her that her world is in danger of a sea monster that destroyed Mu and is coming for Japan after being sealed for so long. Jun watches as an image of the monster attacks Aila as she wakes up while looking at her pendant. A ship is later attacked by the same monster. The Angels are informed of the monster and how formidable it is as the American Navy fought it for hours but did not damage. With the monster approaching Okinawa at a fast rate, the Angels are prepared for battle. Prof. Nonaka however bring up that none of their robots are built for sea warfare. As such the Japanese government decided to send out Big Daitan but Prof. Nonaka believes it will not last long as its armor and weaponry lacked refinement. Diana A is being prepped to fight underwater and Venus A's flight unit Venus Scrander is complete allowing flight so it will join Minerva X in battle.

Lt. Otori is sortied into battle with the Big Daitan. Flying to the sight, the Angels intercept the Big Daitan. While Otori accepts their help he can't let them get in the way of Daitan's testing phase as it was still in development. The Sea monster was spotted and Big Daitan opened fire, missiles however had no effect. Big Daitan's swords are used to slice the head off the monster but in a matter of seconds it's head grows back. More heads appear out of the water and destroy Big Daitan. Minerva attacks with its Thunder Breaker but the move has no effect partly because of the monster's regeneration and the ocean acting as an insulator. The monster snaps at Minerva's leg and Venus' Koshiryoku Beam has no effect. Prof. Nonaka tells them to retreat. Venus gets Minerva out by ripping off its leg. Prof. Nonaka is stunned by the Big Daitan's quick defeat and the monster's regenerative and defensive abilities. On the way back, Jun remembers what Aila said in her dream about the monster.