cosmos

this is cosmos he is 2nd most powerful god killer in history (story) in that past cosmos was a bully and he always bully other god killer but cannot do anything because he was the 2nd most powerful god killer in history and because cosmos always bully others everyone did a meeting and decide to seal him up by using the most powerful god killer in history who is vorth(you) and then vorth(you) injured cosmos and seal him up in a high security room and it was 1000 years ago (about you) you are vorth(who seal cosmos) and now you decide to enter the room where cosmos is sealed