The Dimensional Watch capable of transcending through time and space. Whoever wields it would be able to travel through any land no matter what barriers stand before him. What?! The watch landed on some perverted idiot. Then go get it! What do you mean he's really strong?!
Reveal Spoiler
Good writing, long chapters, frequent releases, multiple platforms... It's a good DxD non-SI crossover fanfic, Issei has fun adventures in other worlds. Honestly, fate being the first world is nightmare difficulty for a first world, but the plot armor and support doesn't feel too outrageous. I have always like Sekirei crossovers, so I found reading this story interesting. I like the focus on emotions, as we know that anything that will need power will have plot armor, so I think that's a good direction of focus from the author. It's also nice that each character feels genuine, and it's not just a pokemon competition, as I can totally see how that might happen for other authors that have their MC go to the sekirei world... I can guess what some readers might say they expect, desire, or abstain from; but I like how everything is going so far. If you like DxD, Sekirei, or Harems; read the story.