The world tree is the oldest being in existence, its roots grew across space. the three never stop growing. The world tree has eternal youth several times over. The world tree is the cosmology itself as time progresses the tree begins to gain intellect and knows how to use his powers. he observed the multiverse for another million years, and he saw humans having fun and asking. is it fun being a human?

that's the story of my existence, I am Mugen sonzai. In a few years, I plan to change my appearance and go to earth to discover if being human is fun. a few years have passed and it's time, I'm excited to see what real people are like face to face. I'm on earth, I have no idea where I am on earth, I'll try to find a village. I may be strong but I still have room to grow. I finally found a peaceful village, they explained how the earth works in this world. there are adventurers, magic users, only one kai user, and multiple ki users. I met some people in the village, it turns out they were undying and can't de by age, they can only die a non-natural death. kai is a power that uses lifespan, no one practices it, only 5 people in the village do. they were the heroes, and each of them has similar powers, they can manipulate reality and control time. they were smug and annoying. I decide I will learn kai. I lived In the village for 20 years and it took me 15 years to learn kai. it turns out that kai is a higher power of hakai. I mastered it time by time. first, I learned spacial manipulation and time manipulation, and I got faster the more I trained. I locked up the power that exceeded all things, even concepts. I choose to lock that power away. I chose to train like a human and start from the beginning, I'll use kai to get as strong as my world tree powers.

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