NeoMuto: Quick Summary!

Basic Plot

A few months pass, and the six of them are living happily, training together and growing as a family. They even found another Muto, who was female(because of course) and demanded to mate with Neo, sensing his strength. This is where Halakrah and Rodan realize that they're going to have to share for a while, and that he's going to have a vast harem.

When NeoMuto was out hunting one day, he noticed Godzilla, and despite thinking he forgot about his hatred, his body envelopes in hate, pain, and sadness. The rest of the family saw the event unfold, seeing NeoMuto change in a seemingly painful manner. From where he stood, a new creature, that was almost eye level with Godzilla, and the two began fighting. The battle was destructive, and caused chaos everywhere. Eventually, NeoMuto almost landed a killing blow, before shutting down and passing out.

From the reaches of space, the battle was being observed by four golden figures. Queen Gidrah, and her three brothers, Ichi, Ni, and San. The battle fascinated them, and they planned to take NeoMuto, as well as Godzilla. Seeing Gojira having similar power to Godzilla, and being a rival of Gidrah, she would be taken as well.

[This is where I eventually lost track of the story, but I'll probably change it in the real one, so go where you want here, so long as you can follow the premonition of Mothra Leo. Just add a bunch of filler or random content here I guess.]

Skar Queen, Shimo and Camazotz, as well as many Giant Apes began to escape their prison in the world below, the hollow earth. They are halted, not yet defeated, by King Kong and Queen Kandy(Yes after Candy Kong), who united during the time Kong was alone, and became mates. 

Neo, who knows that he has to bring about as many allies as possible, aides the Kongs and defeats Shimo, as well as destroying the separation between the Hollow Earth and the Surface, much to Gojira's and Godzilla's anger.

Gidrah seeing Neo's strength, decided to test his power, by using a powerful Bio-Weapon crafted by her handywoman known as Orga. Neo fights this creature, unaware of how powerful it truly was, and was defeated, as well as Godzilla and Gojira, along with a new ally known as Gamera. Putting their mutual hate towards one another, the three of them unite together and beat down on Gryphon until she surrenders, choosing to follow under NeoMuto.

Gidrah, Ichi, Ni, and San don't take kindly to the traitor, and choose to fly to Earth. They arrive almost a year later, waging war. Gidrah, her elder brothers, her subordinates: Gigan, Megalon, Orga, her soldiers: Knifehead, Axehead, Bladehead, Leatherback, Otachi, Slattern, Clover, and her armada of Mecha-Gojira and Mecha-Mosura. There was also a cyborg which seemed to resemble one of Godzilla's species.

NeoMuto and his allies battle to save Earth, but fail, and in the loss, Godzilla, Gojira, and himself are captured and kept as prisoner. Gojira and Godzilla are kept as experiments to develop even stronger soldiers, while NeoMuto is kept to be molded into Gidrah's perfect mate. During his time as a prisoner, he was raped by Gigan, Megalon, and Orga, only one of them actually gaining the seed required to make an heir, where the other two just seemed out pleasure. Each of their methods were vile, but Megalon was the worst, often shocking him with the artificial collar to give herself a bit of a jolt. Gigan is more sadistic, but Megalon is cruel. Orga is just in it for his seed to research, and drink it, due to her gluttonous nature.

The only friendly ones amongst Gidrah's army were Gigan's mother and elder sister, who were kept as prisoner. A year passed, and the three became closer as friends.

He resists the advances of Gidrah and her three subordinates one day, and a fight breaks out, where NeoMuto gains more powers from Desghidorah and Mothra Leo, defeating the false queen. It would've been an easy victory, had the prince's not struck him at once, weakening Neo's hold on Shin just enough for him to finally escape. The three princes fuse back into one, where their power grew too far, but Shin was stronger, crushing the king, as well as the subordinates that where there.