Kangoou kurouki

In this narrative, humans have been gone for two billion years. However, an accidental serum is created from the spillage of ancient technology. This serum is infused with insane levels of Gammer and Chronite elements, which mix with Florikianium, a secret synthetic elemental quintessence that was meant to be sealed underground forever. The serum's location is revealed by recent earthquakes and those remaining on Earth drink from the glowing well for millions of years, eventually becoming immortals. Despite their immortality, the delicate balance of nature still affects each of the 100,000 species that find themselves dehydrated in the barren wastelands. One such species is the red kangaroo, whose name is Kangoou Chiakay. He was badly damaged after making it out this far into the unknown alone. He was an adventurous spirit who embodied the essence of what is good. Somehow a human soul reincarnated into a Red kangaroo who now reached the pool of Quintessence. It is a secret place said to give anyone immortality and supreme intelligence. He was struggling to reach the edge of the pool before passing out twice.