User blog comment:Omega natsu2/Episode 182: The Burning Earth, Review./@comment-24748439-20140517125916/@comment-4829046-20140517191158

Also, I am perfectly aware that adding "O" makes it more polite. Also in addition to what you said is also "ue" which is added for increased respect like aneue or hahaue and I believe that is the highest form of saying it without the 'sama'.