I made a huge mistake

Kaiju that have swallowed the evil factors called Devil Splinters are going berserk across the universe. Infused with the power of Ultra's , the Ultra Medals were made to fight them. But the space Kaiju Genegarg suddenly attacked the land of light. It swallowed the items needed to use them and escaped. Z pursued Genegarg where he landed in a planet where giant humanoid creatures known as Titans roam the world. And eat people. Humanity build a wall to defend itself. There Z would fuse with Haruki a Human living there.