When life plays like a game but your actions have actual consequences, but what does that matter? it resets everytime anyways right? In a closed off universe where various spieces such as humans, eirian and saibugo exist. With a goal to live and explore together as different life-forms from different planets, but one of those had a different selfish plan. Greed and many other sins have taken over noble humans. They wanted all the planets for human-kind it self, hence why they created 'SAIBUGO'. Many different forms of saibugo were made to extinct the eirians spieces. A very gruesome war took place between them and repeats in the history. One invalid coded saibugo decided to escape from the organisation and find out the truth about everything hoping to revive what was destroyed. There is so much more things to explore but dont worry, you have plenty of time...these timelines don't stay put.