User blog comment:HollowIchigo58/High School DxD Season 4 Announced/@comment-2143738-20161026021545/@comment-90.202.240.151-20161026035800

well a season 5 would be guaranteed if it ends with Hades speaking of his plot that happens in volume 11 and lets just say a 6th season did happen then to possibly guarantee it season 5 would have to end with isseis death. Anyways its pretty easy to imagine Hades appearance: a skeleton wearing high priest robes. Theres an accurate pic on google images if you search Haded on it.