"The name of the Titan is... Ultraman Tiga"

—Yuzare

It was night. Eren was doing laps around the field as punishment. He felt his sweat and his tiredness killing him but he won't give up. Suddenly, he saw a glowing light on a nearby tree. He decided to investigate to make sure that it wasn't some asshole stalking him. He followed it into the woods.

Then, he fell down on a small hill into a hole. He stand up and tried to look at his surroundings. He saw three giant statues that looked different than titans. The glowing light appeared in front of him and told him to grab artifact near the statues. When Eren took it, he had a vision in his mind that the statue he saw was fighting monsters and titans. He passed out when it ended.

Eren woke up and he found himself in his own room. He felt weird because he never went back to his room last night. Suddenly, the artifact that he took yesterday was also beside him. It was glowing. Then, a woman in a white dress appeared in front of him. "You are the chosen one" she said. "You are the one that will inherit the power of the light to fight the darkness" she continued. "What do you mean?" eren asked. "You are a descendant of the Tiga bloodline. Tiga is the titan that you saw yesterday.

The artifact that you took yesterday will give you the power to become the titan, Ultraman Tiga." she told him. Eren hearing this took the strange artifact and was inspecting it. The power of a titan, he thought.

As the woman in white explained told him everything he wanted to know, Eren discovers that a giant named 'Kamila' is the leader of the titans. Yuzare, the woman in white also told Eren that if 'Kamila' is defeated then the world will be free from titans. After that, the woman disappeared. Then, Eren decided to use this power to kill all titans and avenge his mother.

"The Battle Of Trost"

As they started to move to their positions, Thomas was suddenly eaten by a titan. The team panicked and some of them stopped moving. Armin was injured as he hit the roof, a herd of titans was coming to eat him but Eren decided to sacrifice himself by making the titans be attracted to him. He was hit by a 15 meter titan. Armin was saved by another team as he was brought to a hiding spot with the other teams. Eren knew that this was his end.

Suddenly, the strange artifact was glowing and he remembered the word spoken by Yuzare. " I'm not going to die yet" he shouted. Eren took the spark lens and put hope in it as he transformed into the titan, Ultraman Tiga.

Mikasa felt down to her knees and tears started to go down from her eyes. She had nothing to live for anymore, Eren was gone forever. A 15 meter titan was coming towards her but she didn't care, she wanted to die. As it came closer, she could giant footsteps, it was louder than a normal titan would have been. She turned around to see a different titan than the normal ones.

The giant used its feet to attack the 15 m, as it was being a rogue one. The giant took Mikasa in its hands and put her down on a roof. Armin and Connie also saw the incident that the giant did. Then, Armin decided to lure the titan to the castle because it would be easier to go there.

As they reached there, a small wall was destroyed and Jean saw two titans being ready to kill him but they were stopped by the strange giant. Suddenly, a weird looking monster burst from the ground beside the castle. The monster attacked the friendly giant instead of the humans. The giant then changed its body colour to purple. The giant flew to the sky and shot bolts of lightning from its hands to the monster and titans.

Then, a light on its chest changed from blue to blinking red. The giant changed its colour back to multicolour. He used a special attack to end the monster. As the monster exploded, the giant flew into the sky. Everybody started to think why did the giant helped them. Armin and Mikasa were standing on a roof as they heard a familiar voice behind them, it was Eren. Mikasa without thinking anything, went to hug him tightly. They both thought he was dead but he wasn't. He was still alive.

A/N: I do not own Shingeki No Kyojin and Ultraman Tiga with its characters