get to go to Highschool dxd universe with

-a Magical Crest(Fate), with the knowledge of Shirou's Projection, Trace, and reinforcement, Kiritsugu's Time Accel, the Von Einzberns knowledge of creating Humunculi and Heroic Spirits, Paracelsus von hohenheim knowledge on the Elixir of Life, and the Caster classes item craft,at ex rank.

-his own version of Unlimited Blade works(called "Infinite World of Armory" (will be a plant covered world, with mountains, gears buried in the ground, taken over of plant life, swords, armor, Shield and every other weapon imaginable taken over by the overgrowth just like the gears, and a tree in the center, the center split with Caliburn and Exaclibur placed in it(cannot pull unless deemed worthy, also The Fate counterparts). only animal life in it, are small birds, flying free(also, unlike usual Reality Marbles, he can keep people in it when he's not using it)(weapons chooses to have from Fate: Rule Breaker, Gae Bolg, Enkidu, Rho Aias, Twin Paired swords(EMIYA's primary swords), Clarient(Mordreds sword), Fran's Mace, Lord Camelot(Mash's and Galahad's Shield), and Elizabeth Bathory's Lance) (Ophis can see this inner world and wants it, in a sense for it to be her new home)

-Top Rank Growth Skill(like Bell from Danmachi)(grow in strength faster then normal, also, Bound to soul, not blood, and can only be pasted down by natural reproduction(sex) but at a lower rank)(also ability to temporarily link ability to others, can break at anytime)

we are a Otaku that likes quotes and lessons from anime! also, has no prior knowledge of Highschool DxD, cause the anime doesn't exist in his original world

'Trace on' works on more then just swords due to the reader not have sword as a Origin or Element. Meaning it can be used on anything from a book, a tool, or even a person(but that can lead to a very painful headache, depending on how old and powerful)

Rule Breaker can Remove Evil Pieces and erase Corruption(what a devil soul has that makes them a Devil).

No Immediate Heroic spirits, certain Humonculi end up having Sacred Gear.

Reader saves Issei by fighting Raynare, and is joined by Koneko. He Traces a Demonic Sword and slashes her lower back, making her lower half Paralyzed. He strikes her Upper back with a Hammer which was Reinforced and turned into a Broken Phantasm, Paralyzing her from the neck down. So Raynare is Captured and is forced to reveal why she tried to kill Issei and why she and the rest of her group are there as well, and she's given Phenex Tears in exchange.

Reader Saves Asia before her Sacred gear is Taken. Asia them sees the reader as an Older brother figure.

Reader uses his Growth Skill to help Rias and her Peerage for their Rating Game with Riser.

The Excalibur Shards aren't pieces of the real Excalibur, but a replica that Merlin, Vivian(lady of the lake), and God made. The Caliburn wielded Arthur isn't real either. The Real Excalibur is in the hands of the Fae, while The Real Caliburn is in the hands of Merlin.

Ophis learns about the Readers version of Unlimited Blade Works, and aims to inhabit it rather then taking back the Dimensional Gap

The Reader met Kuroka prior to getting to Kuoh, and Traced her, learning her history, used Rule Breaker, removing the Evil Pieces and removing the Corruption from her soul.

Reader ends up being a Natural Wielder of Excalibur Rapidly.