This fic's quality or lack of it largely depends on how much you tolerate OOC nes and wide breaks from D x D canon because the author changes a LOT. Issei loses any plot role or relevance and the Boosted Gear while having no bearing on the story, which is a turnoff to fans of the character. A OC based on Karasuba from Sekirei gets Ddraig instead and despite being Issei's twin has no real interaction with him, a major waste of a good idea. Likewise Shirou ends up as a definite case of spotlight stealing crossover character. I generally enjoy Shirou elsewhere, but here he's painfully bland and uninteresting, not helped by being from the Fate route and thus lacking the development of his UBW and Heaven's Feel selves. Rias and Sirzechs are made more unpleasant as well. While the writing quality is generally good, especially with the fight scenes, the plot is overly exposition reliant. There is good characterization for some individuals but for other it falls flat especially where it wasn't needed namely Asia. The author shows a lot of favoritism towards Nasuverse elements but lacks the skill to make them work. The tone is inconsistent and tries too hard to refit the D x D universe with plot elements that don't even make sense half the time. This results in a mess of mood whiplash and elements at odds. It also wastes a lot of potential in turning the story into a generic insert rewrite that makes a crossover of two fascinating universes uninteresting. It's a mixed bag. Some aspects range from okay to prettygood, but I would not recommend it if your a fan of High School D x D or Fate/stay night. It's a disservice to both.
Fanfic Meh.
This fic's quality or lack of it largely depends on how much you tolerate OOC nes and wide breaks from D x D canon because the author changes a LOT. Issei loses any plot role or relevance and the Boosted Gear while having no bearing on the story, which is a turnoff to fans of the character. A OC based on Karasuba from Sekirei gets Ddraig instead and despite being Issei's twin has no real interaction with him, a major waste of a good idea. Likewise Shirou ends up as a definite case of spotlight stealing crossover character. I generally enjoy Shirou elsewhere, but here he's painfully bland and uninteresting, not helped by being from the Fate route and thus lacking the development of his UBW and Heaven's Feel selves. Rias and Sirzechs are made more unpleasant as well. While the writing quality is generally good, especially with the fight scenes, the plot is overly exposition reliant. There is good characterization for some individuals but for other it falls flat especially where it wasn't needed namely Asia. The author shows a lot of favoritism towards Nasuverse elements but lacks the skill to make them work. The tone is inconsistent and tries too hard to refit the D x D universe with plot elements that don't even make sense half the time. This results in a mess of mood whiplash and elements at odds. It also wastes a lot of potential in turning the story into a generic insert rewrite that makes a crossover of two fascinating universes uninteresting. It's a mixed bag. Some aspects range from okay to prettygood, but I would not recommend it if your a fan of High School D x D or Fate/stay night. It's a disservice to both.