Lost and Found BxB

Here he was, Atlas standing on the edge of the skyscraper. One foot left the ground as he starts his long freefall towards the earth 20 stories below him. He felt like a failure, to his siter, to his parents. As his life flashes before his eyes a tear falls then everything went dark. For what felt like centuries he saw nothing but darkness, a abyss of nothing, the void. A bright light slowly broke darkness and the world came back to life as some cheers
"Its a boy"
"Lets name him Renier"
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Atlas was a terrible student, brother, and son. His older sister, Zara, constantly got bullied and after the years she decided to kill herself. Weeks and weeks of torment thinking what Renier could've done to help her forced him into a depressive state where he himself decided to take his own life. After he ends up rencarnating into a magically world that has a evergoing war between Demons and Human Magicians. Renier (formerly Atlas) was born into human royalty. The ongoing war between the Demons and Humans lead to a demon take over of the Human Capital, Citadella, and the eventually captivitly Renier. As the world around Renier starts to crumble he slowly start falling in love with the demon king, Styker. Will the war ever end?