[Plugin: Yet Another Related Posts Plugin] Related post for a post with multiple episode

I’m using WordPress to post some of my stories and I’m using YARPP for my related post. This plugin’s working fine, except one thing.
I have some post with around 10 episode, YARPP can list some of those post in one post, but it just displaying random number. For example, when reading the “ep 6”, it displaying 2,4,8,13,23. It should display the list of episode which are closest to the currently ep ( at least it should display the next ep in the related box ).
Sorry for my english, I tried my best to express my ideal