A/N This chapter is not an actual chapter but a challenge that I have created for a crossover consisting of Fate/Stay Night and Tower of God.

I have just recently read Tower of God and it has immediately worked its way up to being my most favorite story I have read up to now. The problem though is that there are only FOUR crossover fanfictions for this story even though it is a very popular story.

If the problem is that people cannot find where this story is located on the website then all you have to do to find it is go under misc and then click on the Manhwa/Korean Comics, then you use the filter and you will find the different Manhwas under the Character name part of the filter.

SPOILER ALERT

Now onto the challenge, the story will take place about maybe 5 years after the 5th holy grail war (UBW route) and it will have Shirou in a life or death situation with him falling unconscious due to injuries and then having him wake up in front of the doors to the tower.

Now the challenges will consist of:

Saber and Rin end up entering the tower sometime after the First season. (If you need a reason for them to end up at the tower you can just blame Zeltrech telling them Shirou is alive to them and sending them to the Tower)

Shirou must also have his death faked like Baam and he will join FUG alongside Baam.

Shirou must have a new name like Baam's change into Viole so people do not know he is alive (you can just use Archer as his new name).

The Tower shall take place in a separate dimension and have no connection to Magecraft or Magi.

Shirou will be either very strong or godlike (up to you). He will have all of Archers Noble Phantasms and moves. He will also have any moves he used in the other Routes like in the HF route nine lives blade works.

Optional, You must come up with 3 original floors and tests that take place between floors 2 and 20 (the time skip between season 1 and 2).

Shirou will have a Harem consisting of the Saber and Rin along with the four main females of Tower of God. (basically he will have Baam's Harem/love interests, which so far include Yuri, Hwa Ryun, Androssi, and Yeon)

Optional, if you can figure out a way to accomplish this without interfering with the story you can make it so Shirou replaces Baam. This will be more difficult because you would have to figure out some key points that you would have to move from Baam over to Shirou (ex. have Shirou somehow spend sometime in the cave and befriend Rachel while in the cave so he has a reason to chase after Rachel into the tower. Luckily though Shirou has no memories of before the fire so you may not have to face any difficulties like some of the theories of Baam maybe being the Prince. You could just have Shirou originally being Baam and somehow ending up from going to the cave to the FSN world. Also if you have him replace Baam, Shirou will have to be a Wave Controller.)

Optional, instead of having Ilya die you can have her actually end up at the tower and maybe have Shirou reunite with her on the 20th Floor. (you can do this if you do not like having Ilya die)

Correct me if I'm wrong but Shirou uses Od for his magecraft which is generated in his body so technically he would not have to create a contract with the Guardian of the floor to use his abilities. (however for someone like Rin who uses the mana in the air she would have to create a contract)

Also his traced weapons fade overtime because of Gaia or whatever it's called making things return to normal, but with the tower there is no such being so in the tower his weapons would not fade over time.

Have Shirou hide his abilities because with this weapons not fading he can basically produce weapons of mass destruction now (which may attract the attention of workshop), and also because how dangerous his abilities may be deemed. (also because his abilities do not have him make a contract with the guardian) Basically have Shirou trace a weapon when no one is around and just have him have those on him at all time or stored in his pocket. After a while though (maybe sometime in or at the end of the second floor so that FUG gains an interest in him) have his tracing ability discovered (but his UBW reality marble will stay a secret)).

Optional, Have him use at least 3 weapons that are from history but do not show up in FSN like Durandal for example.

Nothing else from FSN will show up in this crossover like the Magi and Clocktower or any other characters.

This one is more of a question but I do not think that Shirou will be able to recreate Ignition weapons because they have a soul in them. However if you want to you can make him recreate them just without the soul but still be able to do the same things as the original.

Shirou's reinforcement will be more powerful then Shinsoo body reinforcement or you can have Shirou using both.

Optional, you can have Shirou learn how to use Shinsoo and actually have it be completely different then Prana.(this will be important if you have him actually be Baam (read challenge 9) since Baam is very good at using Shinsoo)

If you do not have him replace Baam then Shirou will be teamed up with Androssi and Rachel since the other guy isn't that important and you won't have to create OCs to team up with Shirou in the Beginning.(Although anything that guy did do in the story Shirou will have to do those instead like bringing Rachel up to the second floor)

Since Shirou's goal is to be a hero of justice you will have him try to save as many people from dying throughout the story (like the first test of the second floor).

Now a big problem is what to do with Black March, if you have Shirou be Baam then that is easily answered by him having it, but if you have both you will have to decide if Baam or Shirou shall have Black March. (If shirou has Black March then you can have Yuri give Baam a different normal sword)

Now another question, will UBW make Shirou count as a person with an ignition weapon in his body like Baam and Horyang. Also if Shirou uses UBW then will the person no longer be able to use Shinsoo because they are technically not in the tower anymore since reality marbles overwrite reality with the users own reality (it could be interesting how the other characters may react to this if you make this happen and could actually make him be seen an enormous threat)?

Now I don't know if anyone will actually take up this challenge but if any fanfic writers decide to take up this task just PM me so I know and also ask me any question you may have about any of the challenges or on this crossover. Once you publish this story pm me the name so I can mention it in an Author's note in this Fanfic.

Also if no one takes up this challenge I may just do it myself as an independent fanfic that has no connection to what I'm planning to do with Wielder of the Keyblade.