Kamen Rider NetDevil

Kamen Rider NetDevil is a spin-off of Kamen Rider Nettei, it centered around the Isekai adventure of Lord Of Night 5000th whom has to jump into another world in order to open a Internet Cafe there.

Description
Lord Of Night 5000th, the current Demon King (There was no other 4999th Demon King, he was just making that up ) and a big Kamen Rider fans. Also known as Kamen Rider Net-Devil has been eager to jump into another Dimension ever since he known that it was possible to do so.

Now, after gaining the ability to do so, Lord can finally complete his dream.

Episode
Kamen Rider Net Devil Episode 1: Nanoha World