March 2, 1940

A group of empire organization have establish the facility at the philippines when they took over  from US occupation. A leader of organization, Gen. Hidekiro Mauji, brings idea to make weapons against the allied. Before he establish his organization, he convince the emperor to establish an organization to be experiment that can be useful to win the war. An emperor agrees as he sign a contruct to establish an organization of his own. Back to philippines occupation, somewhere in Leyte, a secret facility was build to experiment on humans and create something that can kill their enemy. Gen. Hidekiro has 380,000 personnels and soldiers for a top secret that no one will know about their experiment, including the imperial soldiers & officers who aren't part of his organization.
Inside the facility, Gen. Hidekiro & his second-in-command, Colonel Tagawi Shinoshu are walking through a hallway as they went inside the laboratory room to see scientists are doing the experiments. They are working the experiments on both animals and humans to be digested that are needed for organs. They notice their arrival so they bow down before them and he said.

Imperial scientist: Sir! What a pleasure to see you here.

Hidekiro: Yes, indeed. Now, is it complete yet?

Imperial scientist: Almost. We just finish create an ingredients that are need in order to complete it..

Hidekiro: Then finish it now. I want to see if it's worked so we can be immortal but only for ages. We can still die when someone will kill us in the few hundred years. I want the results, doctor.

Imperial scientist: Yes, general. We will finish this and then we can test it.

He nodded as he went back to his work. They mix the ingredients into the beaker as it turns blue chemical and pour it into the flask. They place a flask on a top of busen burner as he turn on the fire to heat it up. After 5 minutes, they grabbed a flask and pour two orange chemicals inside the test tubes as they pour into a flask and place inside the machine to wait until 10 minutes. Once it's done, they open it to see it turns into a yellow-orange chemical inside a flask. They heat up a yellow-orange chemical by using a bunsen burner again and afterwards, it is done. A doctor carefully injects a chemical into a syringe. He give a syringe filled with yellow-orange chemical to Gen. Hidekiro as he was fascinated. He was about to inject himself when a scientist said to him.

Imperial scientist: Are you sure you're doing this, sir?

Hidekiro: Hmm?

Imperial scientist: I mean, what if it could possibly go wrong once you inject it?

Hidekiro: Don't worry, doctor. I'll make sure it works. This is what I wanted.

He said to assure to the scientist. He inject himself on his arm as he felt pain inside but he wanted to happen so he let a pain best to him. Once he's done injecting himself, he feel nothing but he sense a stink on his arm. Col. Tagawi said to his general.

Tagawi: How is it feel, general?

Hidekiro: I feel... nothing. But I'm sure it will work if we live in few hundred years.

He said to his second-in-command as he receive a relief sighed. He look at the scientist and he said.

Hidekiro: Great work, doctor. Now, I want you to make one of this experiment. So that we have live longer like a gods we are. And we will give him an emperor a gift once the war is over.

Imperial scientist: Yes sir. I'll do my best.

Hidekiro: You will... Have a nice day.

He said as he and his second-in-command left the laboratory to went back to HQ in Japan for discussion of war.

Jan. 8, 1944

3 years later, more of yellow-orange chemicals stored in the tubes as the scientists are quickly needed for Gen. Hidekiro's men for immortal age so someday, they will live long enough in each years and it will be used if the war is lost by the allies so they can be reserve to be resistances to retake back their homeland one day.

Sept. 2, 1945

The war is over when US dropped an atom bomb on both
Nagasaki and Hiroshima as the remaining imperial forces from other country are surrender to the allied. To Hidekiro organization, however, aren't approve a condition of surrendering. So they destroy the evidences and burn the paper samples so no one can be discovered in the future. Gen. Hidekiro & Col. Tagawi have fled from Japan to Leyte to meet up his personnels and soldiers to destroy the facility along with the evidences. Luckily, there's enough a boxes of yellow-orang chemical tube to be used. Afterwards, they fled Leyte to the east coast.
In the far distance from philippines, there are 4 battleships, 1 aircraft carrier, 3 destroyers and 2 cruisers. They fled from far distance so they won't pick up a radar by the allied ships somewhere in the west pacific. Gen. Hidekiro look at the view through a window that he have never flee from his home like a coward before. But, for the survival of imperial army he have to flee so one day, they will retake back Japan from US oppression. Then suddenly, the fog came out of nowhere in the west pacific as they are blind to see it. All of navy ships turn on the lights so they know where they are. A captain have trouble seeing the fog so he asked the general.

Imperial navy captain: Sir! We can't see through the fog. We should head back.

Hidekiro: No... Keep moving.

He said. He's hesitated of his decision but he nodded as he keep sterring the wheel. As the imperial navy ships through the cloudy fog, they saw an island up ahead.

Hidekiro: Tagawi, check the map. I've never seen that one before.

He said. Tagawi take a map and find an island at the west pacific due east course. But there's no island here. He became suprised that an island that doesn't discovered by human beings or appeared in the map. He went to the general with his expression and he said.

Tagawi: Sir, there's no island in west pacific in the map.

Hidekiro: So that means, we are the first one to found this mysterious island. Excellent...

As they getting closer to the unknown island, Gen. Hidekiro went to the communicator radio to inform to every navy ships to his respond.

Hidekiro ( speak to the communicator radio): This is Gen. Hidekiro, we are entering an island where is doesn't exist from the map nor being discovered by other countries. Go to the island immediately.

He said as he finish using a communicator radio. As they getting to the unknown island, Gen. Hidekiro and his troops are landing on the beach, they see a lot of tress and other stuff that doesn't exist in earth. A soldier holding a rising sun flag place on the sand to claim it for their own. Once they're all here, Gen. Hidekiro stepped on he big rock and announce to his men to get his attention.

Hidekiro: Soldiers of imperial army! Attention!

They stand straight as he get their attention. He said to them in speech.

Hidekiro: Today, my fellow imperial soldiers, we are the survivors of the organization that serve to the emperor himself. We may lost the war but we will not lose our hope. We will retake our homeland someday so the rising sun empire will risen again. We claim this land for own as we called it 'Wasure rareta shima' or Forgotten island. We may lose most of our army, navy & aircrafts to defeat the enemy but our soul will survive and we must never forget that we are immortal. Tenno Heika Banzai!

Imperial soldiers & officers:
BANZAI!!! ( x5)

He look at his men with his evil smile and chuckle as he will have his revenge soon.
This is the story of the Forgotten island is now owned by Imperial soldiers of Japan empire.