Anime Crossover: I Became a Simulator for Girls

As you use your power more frequently, the carapace that only insect swarms have developed on your body, and your mouth has even evolved mouthparts capable of spitting venom. You gradually lose sight of whether you are human or insect, and your insect sac grows larger and larger, even reaching the size of a house, within which numerous insect swarms are bred.

[Your existence has caused the insectoid race in this world to evolve continuously. In just six months, some insectoids have reached the size of adults, and countless humans have become food. The other six riders summoned by the Holy Grail War are struggling to resist the insect swarm, and with the help of other magical institutions, they have contained these insect swarms throughout Japan.]

[At 18, your existence was designated for sealing by the Clock Tower. The entire neon world was turned into a wasteland by your swarm of insects. Your body has grown to a height of five meters, your insect sac is the size of a small building, and your eight tentacles are tens of meters tall.]

You want to play with Sakura, but Sakura's life has reached its end due to the Crest Bugs. Left with no other choice, you send Sakura into your bug sac, transforming her into a bug.

Your consciousness is gradually fading; it seems even the last vestige of your humanity is disappearing.

[With no more attachments (to Sakura), you embark on a reckless battle, declaring war on all Servants and factions. The True Ancestors and Apostles remain neutral, while the Church and the Clock Tower dispatch their magicians to form an army. Military forces from around the world concentrate their firepower on you, but all attacks are repelled.]

[The only ones who can truly harm you are these Servants.]

[Number of Noble Phantasms bombarded you, your consciousness grew weaker, and your body slowly succumbed to the instincts of the insectoid race. Suddenly, a man named Fujimaru Ritsuka, accompanied by his Servant Matthew, joined the battle, along with seven other Servants.]

[You are dead, not in body, but in soul. The soul that belonged to Matou Utaha has been completely obliterated. Now you are nothing but a beast, and that will never change. Perhaps next time, you will make a better choice.]

The simulation has ended.

This was the first time Chen Fang had ever simulated being eighteen years old.

"The Swarm Queen is truly powerful, but the side effects are also incredibly strong, even stronger than the previous Heart of Dragons. In the end, the Swarm Queen that Shi Yu transformed into was a complete monster," Chen Fang sighed.

If this talent appears in the selection, you absolutely cannot choose it!

Chen Fang doesn't want to become a monster.

"But what I didn't expect was that this simulation would turn that world into a Lostbelt, and even Fujimaru Ritsuka came here."

[Ding! Settlement successful. Your evaluation for this simulation is A. You can choose one of the following rewards.]

[1. Solidify the purple talent - Queen of the Swarm. After solidification, this talent will directly affect the host and will not appear in the random talents.]

[Secondly, the Matou family's magic information. Although I didn't study it, I still clearly remembered it thanks to my powerful memory.]

[Third, the power to control a single swarm of insects, selectable (flies, mosquitoes, locusts, grasshoppers...). After selection, you can control the swarm, sharing the same viewpoint and location, with 100% swarm loyalty.]

Of the three options, we can eliminate option one first. There are many ways to become stronger; there's no need to become a monster.

The Matou family's magic data is a good choice. The Matou family's magic is water-attribute, and Chen Fang has magic circuits from Rin Tohsaka, inheriting her attributes. He can perform magic of all five attributes, and naturally, he is also adaptable to water-attribute magic.

Option two is indeed a good choice.

Da Ga, a word that can be used to express something.

Option two requires learning on your own, but Chen Fang doesn't have the time for that. To be honest, Chen Fang is too lazy to work hard. He can simply lie down and gain powerful strength, so why should he bother to work hard?

When simulating Rin Tohsaka before, I had some experience with the choices, so I can make those choices again next time.

"I choose three!"

"The power to control a single swarm of insects."

[Please select the insect swarm you wish to control. Only insect swarms that exist on this planet are permitted.]

In reality, the most powerful insect swarms are only a few, such as bullet ants, red imported fire ants, and locusts.

But so much has happened today, even ghouls have appeared. Does that mean the swarms of insects that existed in the anime of his previous life also exist? Chen Fang's heart began to race with excitement.

"Chimera ants!"

Please select the insect swarm currently existing on the planet.

"Fine, if you don't have it, then forget it, you worthless scoundrel!"

Please select the insect swarm currently existing on the planet.

"Parasyte!"

Please select the swarm.

"Surely you have a butterfly."

Please select the insect swarm currently existing on the planet.

After trying to name several famous insects, all attempts failed, and Chen Fang showed a helpless expression.

"Marking Insect".

[Congratulations, host, you have gained the power to control the Imprinted Insect Swarm]

It actually succeeded. It seems that the power of magicians really does exist in this world. Otherwise, how could a magical artifact unique to Type-Moon, the Crest Worm, possibly appear?

With the successful selection of the Imprint Bug, Chen Fang's will shifted, and the scene before his eyes changed completely. His gaze appeared in a dimly lit basement. Chen Fang was very familiar with this place; he had spent four years here during the simulation of Kasumigaoka Utaha's life.

A gaunt old man came into Chen Fang's view.

P.S.: Thank you so much AA for the monthly pass! Love you, sob sob~

Please, kind folks, give me some free flowers and votes! Can you make the comments section a little more active? *sobs*

Chapter 12 The Changes in Kasumigaoka Utaha

Matou Zōkō,

A man Chen Fang knew all too well.

Rin Tohsaka failed with this man in both simulations. In Utaha Kasumigaoka's simulation, she also formed a bond with Zouken Matou. Chen Fang remembered that Zouken Matou had long ago allowed himself to reside in the Crest Worm. Does that mean that, just like in the simulation, Utaha Matou controlled Zouken Matou with this ability?

Is Chen Fang also able to control Matou Zouken?

Chen Fang is incredibly efficient at taking action when it comes to things that don't require much physical effort.

His consciousness was directly projected onto the Crest Worms in front of him, and he was connected to all of them. Chen Fang's perspective changed rapidly, but the scene from Nakagiri Zouken's perspective did not appear in his imagination, and everything in front of him turned pitch black.

There were also signs of several Imprint Bugs in the surrounding area.

Chen Fang remotely controlled the Mark Insect to fly upwards, but it hit a wall. Chen Fang then directly controlled the Mark Insect to keep crashing into it.

"Has it gotten out of control again?"

"Sure enough, this body is also about to reach its limit."

A hoarse voice rang out; it was indeed Zouken Matou's voice.

The hearing of the Crest Worms quickly reached Chen Fang's mind, and he hurriedly focused his consciousness on the other Crest Worms. At this moment, inside the dilapidated body of Matou Zouken, the Crest Worms were constantly rampaging, and these actions caused Matou Zouken's body to twist and change.

"I didn't expect that I could actually control these Marked Insects."

Chen Fang could clearly sense that the power of Zouken Matou was constantly pulling at him from these Marked Insects, but thanks to the system's rewards, Chen Fang had supreme control over these Marked Insects.

Under Chen Fang's control, the Crest Worms inside Zouken Matou's body quickly went berserk.

With a "poom" sound.

In the scene, Zouken Matou's body turned into a blood mist, revealing the densely packed Crest Worms within.

"I never expected it to get out of control to this extent. It's really putting this old man in a difficult position."

Zouken Matou's voice rang out from a Crest Worm. The old man had then possessed another Crest Worm. A humanoid phantom slowly appeared, and a familiar was summoned to its front: "Go and bring Shinji here."

Chen Fang continued to observe all of this.

Soon, the boy named Shinji Matou appeared before them.

As he came, he said, "Grandpa, I learned another magic trick today. Is there something you need me for?"

It seems that the second master in this world is a person with magical talent, which explains why Rin Tohsaka said that her sister also has the surname Tohsaka. Now that there is a successor, there is no need to find a daughter of the Tohsaka family to modify.

At this point, Shinji Matou was still unaware of the seriousness of the situation.

The next moment, without Chen Fang's control, these Crest Worms surged into Shinji Matou's body.

Before he could react, his most respected grandfather had taken over his body.

"Your youthful body is full of energy, Shinji. You're such a good kid."

Chen Fang looked away.

No longer concerned with these matters, Chen Fang had already taken control of the Crest Worms and could summon them at any time. Unfortunately, the two places were separated by a city. Soubu High School was in Chiba, while Matou Residence was in Fuyuki. It would take at least a day for the Crest Worms to arrive.

Perhaps sensing Chen Fang's concerns, the system thoughtfully provided a reminder.

The swarm of insects controlled by the system can be summoned by the host anywhere, but the host must pay for the magic power required for the summoning; the system merely provides a medium.

"That's good."

That way, we won't have to figure out how to get these insect swarms out of the Matou residence.

"Continue the simulation."

[Simulation failed. The character's current luck value is insufficient, and simulation cannot be performed at this time.]

Well, Chen Fang didn't expect that Kasumigaoka Utaha's luck was only enough for one simulation. He didn't think much of it, since Utaha was just an ordinary person in her original world, and even in this world, she didn't change much.

I glanced at the time; it was already six in the morning.

"I didn't expect this simulation to take so long." Chen Fang started making breakfast and lunch.

...

Kasumigaoka Utaha had a dream.

in a dream,