The Kaijuverse outline
Part 1: Guardians
Mothra: The one that sets everything into motion, her story starts when The Elias Triplets warn her of a monster slaughtering the dinosaurs and sucking the Earth's mana pool dry. This monster is King Ghidorah. Mothra is able to fend off the monster but it retreats back to space before she can kill it. Little did Mothra and the Elias know that they were being watched by scientists from the acient civilization of Mu/Atlantis.
Gyaos: With their new knowledge mana thanks to the battle between Mothra and King Ghidorah they start messing with powers they couldn't possibly control. They ended up basing their creation on the pterodactol, one of the creatures roaming the earth at the time. The Gyaos begin to destroy the civilization that gave them life.
Mothra part 2: Mothra learns of another threat to the Earth and it's mana. Mothra teams up with the ancient civilization to face the army of Gyaos. They manage to kill off most of the Gyaos but with very heavy casualties. The ancient civilization went from thriving to almost extinct.
Gamera: Realizing that the Gyaos that got away would reproduce and most likely attack civilizations that came after them and the fact that they couldn't rely on Mothra forever they decided to make their own guardian. After multiple failed attempts they finally succeeded in creating Gamera: The Guardian of the Universe. Gamera was set to awaken if and when the Gyaos imerged.
Mothra part 3: After the battle with the Gyaos Mothra goes back to Infant island. She stays there for many centuries without any other large scale threats to the world attacking. During this time the ancient civilization and the dinosaurs had died off and humans had begun to take over. Some of these humans discovered Mothra and began to worship her as a kind of god. Mothra had also laid two eggs. On top of that despite the fact that the dinosaurs had died off Mothra was able to save one species, what would later be known as a Godzillasaurus. Unfortunately despite Mothra's best efforts the species is beginning to die out. Fastforward to 1945, American soldiers end up discovering the island, Mothra, and the last remaining Godzillasaruas. Deciding to get rid of the threat and test out their new nuclear weapons America bombs the island. Mothra tries her best but can only protect one of the eggs and the Elias' sacrificing herself in the process.
Godzilla: The Godzillasaurus having gone through radiation puberty appears in Tokyo in 1954, nine years after his mutation. Just like the original movie Godzilla attacks and Dr. Serizawa sacrifices his life to kill Godzilla. Unlike the original movie though it doesn't work, at least not completely. It severly injures Godzilla, melting off much of the skin from his bones. This isn't enough to kill Godzilla because of his healing factor however it does incapacitate him for a number of years.
Battra: Mothra's last thoughts were something alien to her, hate. Hate for the humans and their weapons, because of them everything she's ever treasured and worked for to protect were destroyed in just a few seconds. Upon Mothra's death these thoughts flew into the egg that Mothra couldn't protect and was seemingly destroyed. The combination of the radiation and the negative energy of Mothra's thoughts created Battra. Shortly after he hatches he's approached by Belvera, one of the Elias who was horrified by the humans actions on Infant island. She convinces him to try to destroy the humans so they can pay for what they did.
Mothra Leo: He hatches at around the same time as Battra. The moment he awakens he senses Battra and heads towards him. The Elias' (who were keeping an eye on the egg) followed him. When he sees that Battra is harming humans Leo attacks. The larvae begin to fight. Meanwhile The Elias' also began to fight, Lora and Moll riding on their stead Faire and Belvera riding on her stead Garu Garu. The Japanese military try to stop the fight but to no avail. Leo manages to make Battra temporarily retreat. Leo and Moll and Lora go back to the remains of Infant island. Leo cacoons himself and after a few minutes immerges in his Moth form. Battra does the same in another location. The brothers begin to fight again, during the battle Lora manages to convince Belvera to stop. Belvera begrudingly agrees, she says that not only will she and Battra not help the humans with any of their plights but also warns that if humans ever mess with forces beyond their control again she will not hesitate to continue her crusade. Belvera and Battra fly off. Moll and Lora breath a sigh of relief.
Gamera part 2: The battle between Battra and Mothra Leo had forced both of them to consume a lot of the Earth's mana. This, along with the increasing amount of pollution provided the perfect enviroment for the Gyaos. This forces Gamera to wake up. After finding a comma shaped bead Gamera forms a connection with 18 year old Miki Sageusa. They develop a phsychic link because of the bead. Gamera wasn't the only Kaiju alerted by the Gyaos' presence. Mothra Leo and Battra also sensed the danger. Lora, Moll, and Mothra Leo rush to see if they can destroy the Gyaos. Belvera and Battra stay away, content to let the humans and Mothra Leo fight their own battles. Gamera and Leo team up to deafeat the Gyaos. Gamera dealing with a more powerful version called a Super Gyaos while Leo kills as many as he can and makes sure nothing interrupts the fight between Gyaos and Gamera. They succeed but much like before they know that more Gyaos will eventually appear. Miki Saguesa quickly becomes Japan's resident monster expert and is asked to join the newly formed G-force.
Part 1 would be it's own story and each paragraph I wrote here would be it's own chapter (I might split some of the bigger ones into two parts but I'm not sure yet). I decided to post this here to just kind of gauge the reactions, is anyone interested in this universe I'm creating so far? Do you guys like how I connected all of the lore? Are there any other monsters you guys want to see later in the other parts? (Except for more Godzilla, I will focus on him more in the later parts.) I will update this whenever I start thinking of ideas for other parts, I'm not exactly sure when I'll start writing the story proper though.