"Say, has Da Vinci been acting weird lately?" Ritsuka asked Mashu as he along with her were sitting at a coffee table together.

"I don't know. Why are you asking me senpai?" Mashu asked.

"Well lately, I've been seeing her asking the chefs of Chaldea for some samples of miso soup and heading towards a room immediately afterwards. Furthermore, when I try to call out to her, all I've ever received was her tired and grumpy face with her saying, "Not now Ritsuka, I'm busy.""

Mashu was surprised at Ritsuka's explanation. "Really?"

"Yeah. I think this is the first time Da Vinci's kept me out of the loop of something."

"Wow. Da Vinci-san keeping you out of the loop of something...whatever she's doing, it must be something quite important to her."

"Indeed. What could it be though?"

Meanwhile, Da Vinci was carrying the samples of miso soup made from the various chefs of Chaldea, which included Shirou, EMIYA, Minamoto-no Raikou, Beni-enma, Tamamo-No Mae, Boudica, Arthur, and many more. As she continued to carry the samples of miso soup to a room she claimed for today, one thought came into her mind.

"Man. I can't believe that I'm actually doing this experiment...and to think it all started from that comedy show that I watched a while back..." she thought as a memory that happened earlier came into her mind.

(A while ago...)

Da Vinci was in her room, thinking about ideas, theories, experiments, or anything that came into her mind. "Hmm...there are so many things to think about today..." she thought as she was relaxing on her favorite chair, holding her favorite mug that has her favorite brand of coffee in it. "Wonder what should I do today..." Da Vinci then looked around her workshop, looking for the many things that could interest her for the time being.

Watching Kamen Rider Wizard? Nope, she's already done with the series and is now watching Kamen Rider Ex-Aid.

Reading a book? She's already read her entire bookshelf and knows every story and how it ends.

Listening to music? She's already listened to every bit of classical music CD and record that was in her room.

Inventing something new? She's completely fresh of ideas right now.

Da Vinci let out a sigh as every option she had are considered useless now. "Well, guess I could see what's on Chaldea TV at the moment." She then got out from her chair and headed towards where the remote control to her workshop's TV was. Soon, she booted the TV up and it was then that she started to flip through a few channels. As she did, she ended up on a channel that had something that interested her.

That something was Gaki No Tsukai, a comedy show, and it was hosting an episode of its kiki series.

"Hm...this looks interesting. Maybe I'll give this a go," she thought as he looked at the show with growing interest.

Soo, Da Vinci watched five guys trying to taste something and getting the right brand. She watched one guy guessing which brand was which and started a chain of correct guesses. However, it was then that he met his doom when he tasted his next sample.

"The chocolate that I ate is not Ghana Milk Chocolate!" the man in the television said, hoping to get the right answer.

However, in an instant, a buzzer sound appeared, and the entire room went red, symbolizing that he got the wrong answer. He kneeled and let out a scream in despair as he was about to receive the punishment for his failure.

"Oh dear, I wonder what's going to happen to him?"

In an instant, a man in a black devil costume appeared holding a trident. He yelled, "You don't deserve the sweetness of chocolate!" while using his trident...as a blow dart gun, shooting what seems to be a plastic pellet into the other man's butt, making him scream in pain.

At that moment, Da Vinci started to chuckle before it turned into full-blown laughter. The laughter lasted for a while as she was clutching her sides as she laughed controllably. "What the heck?! That was so funny!" she thought as she ended up kneeling. After many minutes of uncontrollable laughter from her lungs, she finally regained herself. "All right, let's see what happens next..." she thought as she got off from the floor and sat down on her chair again. Then the other guys tried to guess the right chocolate, and like the man before them, they all failed hilariously, making Da Vinci laugh at each of their attempts.

Soon the show ended, and Da Vinci was still chuckling at the antics of the comedy show. "Wow. I can't believe that all of them got shot in the butt after getting the wrong chocolate...jeez, it's so hilarious that I could die from laughing!"

As Da Vinci stop chuckling, it was then an idea suddenly came into head.

And this idea could be the craziest one she has ever done.

(Back to the present...)

"Man, who would have ever thought that a comedy show would actually give me an idea? Well, to be fair, ideas can be found in unexpecting places, and it's the craziest ideas that are found in the most unexpected places..."

Soon, Da Vinci brought the samples of food to a spare room she secured just for today and placed the samples of food on the tables. "All right. Now I need to wait for the special guests to arrive..."

And it was then at that moment, Irisviel came with the special guests Da Vinci was waiting for.

Which was Arturia, Ishtar, Parvati, Sitonai, and Astraea.

"Hey Da Vinci! I got the special guests you were asking for!" Irisviel said with a smile on her face.

"Excellent! You can leave now," Da Vinci said.

"Okay!" Irisviel then disappeared into a part of the room she was in, leaving Da Vinci with Arturia, Ishtar, Parvati, Sitonai, and Astraea alone.

Meanwhile, Arturia, Ishtar, Parvati, Sitonai, and Astraea were confused with Irisviel's actions and were even more confused with why she brought them to the room.

"Da Vinci, what is the meaning of this? Why did Irisviel drag me, Ishtar, Parvati, Sitonai, and Astraea here?" Arturia asked.

"Yeah! You better have a good reason for this Da Vinci! I was in a fight with Astraea you know! And I was on the verge of winning!"

"Ha! In your dreams! I was on the verge of winning!" Astraea argued.

"Why you...!"

And Ishtar and Astraea began fighting again, making everyone else sigh over their childish fight. "Anyways, Da Vinci, what's going on here?" Parvati asked.

"Yeah. Why did mama drag all of us here? Was it your idea?"

Da Vinci let out a smile. "Have any of you ever heard a batsu game?"

Arturia, Parvati, and Sitonai shook their heads in reply while Ishtar and Astraea were too busy fighting each other in the background. "No," they said.

"Well then. It's like this. A batsu game is a penalty game that is usually done after a competition of some sort. The winner forces the loser to participate in the batsu game, which involves doing or experiencing something unpleasant," Da Vinci explained.

"I see. But why are you asking all of us this?"

"Well...I saw one of these batsu games on television earlier and wanted to try it out myself."

Arturia let out a sigh of disbelief. "Really? You asked Irisviel to gather all of us just to do a batsu game in a competition?"

"Yeah."

Arturia sighed again. "I'm sorry Da Vinci, but I do not want to join this batsu game of yours. It just doesn't feel right."

"Me too," Parvati said.

"Yeah. Sorry Da Vinci, but I'm not interested in this type of thing. And plus, what do you have to offer?" Sitonai replied.

Da Vinci let out a smile as she heard Sitonai's question. "What if I were to tell you that the winner of said competition gets a free day pass with Shirou?"

At that moment, everyone was stunned silent as they heard Da Vinci's words. Even Ishtar and Astraea stopped fighting for a moment just to hear those words. Nobody said anything as there was silence in the air. Then Arturia broke the silence.

"Da Vinci...can you repeat what you just said?" Arturia asked.

"Well...the winner of said competition gets a free day with Shirou...does that interest you?" Da Vinci said in a sly tone of voice.

For a moment, the girls didn't say anything. Then after a quick moment of silence, all the girls had one answer and they yelled it out.

"YES!" they all yelled in agreement.

Da Vinci's smile even grew further. "Well then...let the batsu game commence! Now here's how it works! There are nine dishes of fried rice over there, and each of them are made by different chefs. Each plate has a name on it so you can tell which on is which. A person tastes a random plate first while being blindfolded and has to guess which one is it by tasting the nine plates on the table. Whoever wins gets the prize! Now then, who wants to go up first?"

"I'll go!" Ishtar said as she got up to Da Vinci. Da Vinci then gave Ishtar a blindfold in which she put it on her eyes. Da Vinci then grabbed a random bowl of miso soup and gave it to Ishtar. As she took a bit, she examined the taste and texture of the miso soup itself for a few seconds before taking off the blindfold itself. Ishtar then went over to the table and examined the nine plates of miso soup that was on the table.

"Hm...the bowl of miso soup I had earlier...which plate is it..." she thought as she eyed each bowl. Eventually, she saw the bowl made by Minamoto-No Raikou and picked it up. "All right! I'll go with this one!" She then took a sip out of the miso soup and examined it. After a few seconds, she made a decision.

"Okay. The miso soup I had earlier was not this one!" she exclaimed.

For a moment, nothing happened. Then a dinging sound was heard throughout the room, surprising everyone. "What was that sound?!" Ishtar asked.

"That sound means that you got the answer correct. You see, if you hear this sound, it means you got the answer correct."

"I see...well then, this should be easy!" Ishtar exclaimed confidently.

With confidence, she then went over back to the table and chose Tamamo-No Mae's bowl. She then did the same process as she did with the earlier bowl of miso soup. "All right! The miso soup that I ate before was not Tamamp-No Mae!" Ishtar exclaimed, hoping that she'll receive the same answer as before.

However, to her disappointment, a different sound was heard across the room.

"Eh? What's this sound?"

"Sorry Ishtar, but you got the wrong answer. As a result, you get the batsu game! Irisviel!"

In an instant, Irisviel appeared in the room, holding a giant paper fan.

And it was the paper fan that was used for comedies.

"H-Hold on a second!"

"Nope! You're not making miso happy!" she exclaimed as she slapped her on the head as hard as she can with the paper fan. Irisviel then retreated to where she came from while Ishtar was confused with what just happened.

"What just happened here..."

"Well, as I mentioned earlier, you got the wrong answer. Therefore, you got the batsu game, which is Irisviel slapping you on the head with the paper fan as we saw earlier."

"I see. Whose miso soup did I taste earlier?"

"The miso soup you tasted earlier was Beni-enma's."

"Is that so..."

It was there that Astraea let out her usual laugh after seeing Ishtar getting slapped with a paper fan. "Ohohohohohohohoho! You lack elegance and grace Ishtar! You can't even figure out which soup is which? How pathetic!"

Ishtar turned to Astraea angrily. "It's not as easy as you think! Try it out for yourself!"

"I will!"

"Uh...did mama just made a pun over there?" Sitonai asked.

"Yeah...I think she just did," Arturia replied.

"So that's a batsu game..." Parvati said.

Soon, Asraea volunteered to do the same thing Ishtar did and put a blindfold on her face. As she did, Da Vinci handed her a spoonful of miso soup. Astraea carefully tasted it and examined the flavor, texture, and other things. As she was done with tasting it, she moved over to the table where the other bowls were. Eventually, she picked up Arthur's plate and took a bite out of the miso soup that was on it.

"Hm...this flavor...and texture...it's not the one I tried earlier..." she thought as she put the spoon down. "The miso soup that I just had is not Arthur's!"

In an instant, a dinging sound was heard across the room, telling everyone she got it right. Astraea let out a smug and confident grin while looking at Ishtar. "See that Ishtar!"

Ishtar didn't say anything, but still looked angry at her. Astraea then headed back to table to taste the next sample that caught her mind, which was Beni-enma's dish. She then took a bite out of it. As she was tasting it, she examined it as well. When she was finished, she had her answer.

"The miso soup that I tasted earlier was Beni-enma's!" she said confidently, knowing that she got the right answer.

To her surprise however, the buzzer sound was heard throughout the room, shocking Astraea. "Eh!?"

"I told you so Astraea! It's not as easy as it seems!" Ishtar yelled.

And just like before, Irisviel came out with the giant paper fan in her hands. "You make miso angry!" she exclaimed as she slapped Astraea on the head with the paper fan. She then left the room, heading back where she came from. Astraea was cradling her head from the slap Irisviel just gave her while Ishtar was laughing at her.

"Yup. Mama's making puns..." Sitonai thought.

"Ow...I can't believe that was the wrong one..." Astraea muttered.

"Yeah. Sorry Astraea, but the miso soup you just tried earlier was Tamamo-No Mae's miso soup. It was Minamoto-No Raikou's," Da Vinci said as she showed her the right answer in front of her. As Astraea looked at the answer and took a sip of it, she let out a long sigh.

"Wow..."

"Anyways. It's my turn now," Sitonai said as she got up to Da Vinci who handed her a blindfold. As she blindfolded herself, Da Vinci handed her a spoonful of miso soup, in which she tasted it. As she was done tasting it, she took off the blindfold and went over to the table to check the other bowls. The first bowl she checked was Boudica's miso soup. She then tasted it, and in an instant, she had her answer.

"The miso soup that I had earlier was not Boudica's miso soup," Sitonai said.

In an instant, a dinging sound was heard across the room, telling everyone she got it right. Sitonai then back to the table and tried out Minamoto-No Raikou's bowl. As she tasted it, she figured it was it either.

"The miso soup that I had earlier was not Minamoto-No Raikou's miso soup."

And just like before, a dinging sound was heard across the room, telling everyone she got it right.

Meanwhile, Ishtar and Astraea were dumbfounded over the fact that Sitonai beat their record so easily.

"Wow. As frustrating as it is, Sitonai just beat our record..." Astraea said.

"Yeah. I can't believe it either..." Ishtar said.

Meanwhile, Sitonai was still examining the rest of the bowls of miso soup. She then chose Arthur's bowl and took a sip. As she did, she then put the bowl down and said, "The miso soup I had earlier was Arthur's."

And then the buzzer sound was heard throughout the room, telling everyone that she got the wrong answer. "Eh?"

As such, Irisviel appeared, holding the paper fan in her hands. "I'm sorry my daughter, but are bean-hind on miso," she said as she slapped her on the head with the paper fan and then she left the room.

"Dang it. And I thought it was right as well..."

"Yeah. Sorry Sitonai, but the miso soup you had earlier was Boudica's," Da Vinci said as she handed her a bowl of Boudica's miso soup.

"I see..." she said as she tasted it. "You're right. Her's is a little less salty than Arthur's."

"Told you."

"A-Anyways, should I go next?" Parvati asked.

"Sure. Go ahead."

Parvati then went up to where Da Vinci was and blindfolded herself. As she did, Da Vinci handed her a spoonful of miso soup. As she did, she examined the texture and taste of the miso soup. After she was done, she took off the blindfold and examined the bowls in front of her. As she did, she tested out Tamamo-no Mae's bowl first and upon tasting it, it wasn't the same as the one she had before.

Clear with her answer, she said, "The one I had earlier was not Tamamo-No Mae's miso soup."

In an instant, a dinging sound was heard across the room, telling everyone she got it right. Parvati let out a sigh of relief as she got the answer correct.

She then proceeded to head towards the next bowl, which was Minamoto-No Raikou's bowl. As she did, she then examined it and tasted it. "Hm...this taste...it's not the same."

Like before, she was confident in her answer. "The miso soup I tasted before was not Minamoto-No Raikou's."

And just like before, the dinging sound was heard again, making Parvati relieved. She then continued back to the tables.

Meanwhile, Ishtar let out a small sigh. "Wow. Sakura actually beat both me and Astraea...this is new..."

"I think she's going to win at this pace..." Sitonai said.

"Maybe," Arturia said.

Turns out Sitonai was right. Parvati went through the bowls of miso soup like no one else has. Soon, she was only down to two bowls.

"Two bowls left...I wonder if I can do this right...well, there's no turning back now!" Parvati then picked up one of the bowls and tasted it. As she did, she felt a familiar taste coming back towards her.

Confident in her answer, she let out a big smile. "The miso soup I had earlier was senpai's!" she said.

However, to her surprise, the buzzing sound returned, shocking her. "Ehhhhh?!"

Soon, Irisviel appeared in the room with the paper fan in her hands. "Sorry Parvati, but you miso much things." She then slapped Parvati on her head with the paper fan and headed back where she came from. Meanwhile, Parvati was confused.

"I don't get it...I thought that was senpai's miso soup..." she muttered.

"Yeah...sorry Parvati, but that was EMIYA's miso soup. It's understandable though, since that both Shirou and EMIYA are the same person," she said as she handed her a bowl of EMIYA's miso soup for her to taste. As she tasted it, she realized that Da Vinci is right.

"Wow. You're right."

"I know right? Anyway, it's Arturia's turn now. Good luck Arturia!"

Arturia nodded and proceeded to blindfold herself. As she did, Da Vinci then gave her a bowl of miso soup for her to taste.

However, she smelled it first and then tasted it.

"Hm?! This smell...and the taste...this is...!"

For a moment, Arturia stood there, doing nothing. And it was confusing the others for a moment.

"What's the King of Knights doing?" Astraea whispered.

"I don't know. It looks like Saber is in deep thought about this," Parvati said.

"Seems so. And it looks like she's serious about this," Ishtar said.

"Indeed. Will she do the same thing as Parvati did?" Sitonai said.

"Who knows? It's going to be hard though considering that there's a lot of samples to taste," Da Vinci said.

Meanwhile, Arturia was processing the flavor and texture of the miso soup in her head. As she processed the flavor in her head, she was starting to break down the details of the miso soup itself, knowing who was the one who created it.

As the answer came into her head, Arturia let out a smile. She immediately went to the table and started to smell every bowl before heading towards Shirou's bowl. As she did, she grabbed Shirou's bowl and finished the entire thing, surprising everyone.

For a moment, she stayed silent and didn't do anything before turning around with a smile on her face.

"The miso soup that I had earlier...is Shirou's miso soup!" she exclaimed proudly.

For a moment, nothing happened as Arturia exclaimed her declaration. Then in a sudden twist of events, the dinging sound was heard, shocking everyone.

"EHHHHHHHHHH?! SHE GOT IT RIGHT IMMEDIATELY?!"

"Hm? Is there something wrong everybody?" Arturia asked, unaware of the shock she just created.

Despite being shocked, Da Vinci let out a smile as there was a winner to the batsu game she created. "Congratulations Arturia! You won a pass that allows you to have a free day with Shirou! And here it is!" she said as she handed her the pass.

"Yes. Thank you, Da Vinci," Arturia replied with a smile on her face.

Meanwhile, everyone else looked at Arturia in shock and learned one new thing about her.

When it comes to food made by Shirou, she'll immediately recognize it.

Author's Note: I do not own Gaki No Tsukai. That belongs to the comedians that made the show themselves.