In many timelines, one can always see one Emiya Shirou fuck up in many ways.

In this case, what happens when he attempts to mess with the greyboxes in his cyberbrain?

Shirou blinked several times as he stared at the area he was now in. The last he had remembered was attempting to fiddle with one of the greyboxes to see if he could increase his body's response time without any restraint.

The moment he tried, he saw what was basically the blue screen of death with a tiny logo called 'Windows Grail System 98' at one of the corners. That image flickered for a moment before completely fuzzing out into a Japanese style Dojo. In fact, if he didn't know any better, be was back in his old homes dojo all those years ago. A glance up made him freeze up and pale as he noticed a sparkly banner detailing where he was.

WELCOME TO THE TIGER DOJO!

Before he could even make a response, the sound of a door slam open and a woman with short light brown hair wielding a shinai marched in.

"Oh come on!" The woman yelled in front of his face, "At least give me a better description you damn omake making idiot!"

There was a moment of near silence as crickets chirped in the background. Before Shirou could even comprehend what the christmas cake had just said, the lady smashed the tip of her Shinai to the floor with a meaty thump.

"Shirou," the woman said with big watery tear filled eyes, "the meany called me a christmas cake! I'm still young!"

Once again, before he could even comprehend that as well, he was hit by her shinai with the force of a tiger.

"You stupid man!" She yelled in front of Shirou in annoyance, "I, Fujimura Taiga, am not a tiger!"

Quickly composing herself, she coughed a few times before proudly raising her shinai in the air.

"Anyways! Welcome readers to the Tiger Dojo! Normally I'd have my assistant Illya with me, but she's currently arguing with our omake writer about him wanting her to wear pants in this act! He sounds just like a dad without being one!

Now in the Tiger Dojo, you all know that I only appear when Shirou goes into a bad end. In this omake, I'm here in order to prevent the bad ends in Recursive Anathema/FiendLurcher's Fanfic called 'Man off the Moon'. Hopefully other fans will make up their own Tiger Dojo skits so that person doesn't need to try! Give me more love people!

Sorry, let's explain why we are here now. Shirou tried to make himself better without any saftey in mind and well..."

Instantly Shirou's sight was replaced with seeing a version of his own head puffing up like a balloon before exploding with a gory confetti filled poof.

"Yeah," Taiga winced, "The writer of this made it over the top exaggerated just to amuse himself, but it's fairly accurate that you blew up your own brain and causing the story to end there. You only have that one body and you never thought of making a clone so far in the story or you didn't know that cloning was an option. The end we see is that either you ending up eating living beings or go back to being stuck in the Moon Cell.

Now, before you even try to look into your own brain again Shirou, I would say don't even bother unless you got no choice but to do so to survive. Instead, why don't you try hooking up with an Asari? Oh! maybe meeting a Quarian and learn their skills/teach them how to be more better at fixing things! Heck, you could probably be able to raise a Tali flag by having you save the ship her father is on!

I'd give more opinions, but our lazy omake idiot is falling asleep here and he has work tomorrow so let's stop here for now! Again, I expect others to make up their own skits! Bye bye and see you again!"

Seeing as the dojo faded into darkness, Shirou grumbled that he didn't even have a speaking part.