User blog comment:DeathGodPrayer/Talk About What You Want!/@comment-24501441-20140203223354

I'm sorry if this isn't relevant but I'm asking because of Highschool DxD. I've learned what most of the honorifics mean, but what is -tan supposed to imply? I'm asking because of a time Issei was called Issei-tan (May be mistaken on the character) and he was annoyed by it so I was curious when that term is used. The other thing I'm confused on is when honorifics are used (I have the general gist) for example Issei calls Kibe by his family name without honorifics but Kibe calls Issei "Ise-kun" and Issei calls Koneko "Koneko-chan" but he calls Ravel by her first name without honorifics although they are both his juniors. Thanks in advance.