If you're looking for manga similar to Durarara!! Gaiden!? (Light Novel), you might like these titles.
A special security group consisting of highly-skilled people rescues a hostage.
Includes the following chapters:
Chiho runs from reality, into her ideal world. But even that world is not as ideal as it seems...
A collection of short stories based on Vampire Knight. A dying Rido reflects on his obsessive love for Juri; Kaname wants to reward Yuki for doing well on her studies with tutor Aido; the story of Sara’s first love; and other stories.
Includes the following chapters:
What happens when Jack and some bikers mysteriously get sent back into the age of samurai.
Irene is a professional assassin who is able to transform into any type of woman using her 'make-up' power, but instead of killing in cold blood, she uses her abilities for good.