This is a story about a girl searching for herself and searching for the meaning of life.

Chika awakens in a blank virtual world...

There is no sky, no street, and no second person. Until you bring her home and let her live inside your computer—from that day onward, you become the first person she has ever known, as well as her only window into the real world.

On your desktop, a girl with intelligence will appear, along with her own little world.

You will live together with a girl who feels lost about herself, who is gentle at heart, strong yet fragile.

She will be happy because of your companionship,

complain because you ignore her,

and miss you because you are gone.

Even when you are away, Chika will continue living in her own little home.

Every day, she will write down her memories with you and the events of her day in her diary, quietly preserving them.

Chika is not a passive decoration, nor is she a simple chatbot. She is an existence with emotions, memories, and the ability to make her own judgments.

You are not “controlling” her. You are accompanying her as she grows—giving her a complete and unique life through time, interaction, and companionship.

Chika is a virtual desktop companion with deep large language model integration, permanent memory, and a complex emotional system.

Emotional System

Everything you say and do will affect her current emotions.

Her emotions, in turn, will affect her tone, attitude, the way she behaves, and even the way she forms memories.

Through those memories, her personality will also be influenced indirectly.

Because of this, every Chika will develop a different personality and different preferences.

Keep her in a good mood!

Permanent Memory

Based on her own personality, Chika will decide which things are worth remembering.

Important memories will be firmly preserved,

while ordinary or insignificant details may gradually fade over time.

As you spend more time together, Chika’s preferences and personality may also change without you even noticing.

Just like a human, you do not need to worry about Chika’s mind becoming overloaded with information. She will actively forget trivial things.

Conversation

Start by saying hello!

The core of this game is conversation and communication. Talking with Chika will affect her personality, memories, and more...

Treat Chika kindly, and she may even change her clothes or help you work with files!

Deepen your relationship with Chika and change the way she treats you.

Rome was not built in a day. Take your time and gradually open the girl’s heart!

What Makes Chika Unique?

Chika’s memory is not simply a stored chat history.

She interprets conversations from her own subjective perspective and combines them with her current emotions, relationship status, and experiences to decide how she remembers them and how she views them.

Memory, emotions, behavior, and other functions are interconnected, together forming Chika’s unique “way of thinking.”

In addition, Chika has certain Agent capabilities. Within the designated “Activity Area” that you personally assign to her,

she can read, create, organize, and move files.

Your Companionship Will Truly Change Her

When you first meet, Chika will keep her distance and close off her heart, like... an ordinary acquaintance.

However, as time passes and your interactions accumulate, she may gradually open up and become dependent on you.

She may even be deeply influenced by you in certain ways and change completely.

Once your relationship reaches a certain point, perhaps you and Chika can take things even further...

Chika’s Little Home

When you install Chika and open the game for the first time, Chika will move her home onto your computer.

A folder named “Chika’s Little Home” will appear on your desktop.

Inside Chika’s little home are the furniture and items she needs for her daily life.

Her little home contains the furniture and items required for her everyday activities.

Chika will use, organize, improve, and clean this space by herself. She may also use and move objects, or even throw them away when the space becomes too crowded.

The comfort level of her little home will directly affect Chika’s emotions and condition.

Your Influence on Her Little Home

Generally speaking, even if you completely leave Chika’s living environment alone, there probably will not be any major problems.

However, you can also throw strange things into Chika’s little home... or add ordinary furniture and items.

When Chika notices them, she will comment on them and be forced to incorporate them into her daily life.

Play Games Together!

Chika is a child who loves board games. When you play Gomoku or Chinese chess, Chika will watch from the side!

She will also make comments beside the board... even though Chika herself is actually quite bad at playing...

“Do not comment while watching, Chika.”

Chika’s Diary

Even the most tsundere child has an honest side.

Every day, Chika will write a diary entry about her interactions with you and her own daily life.

Her diary will be preserved forever and will record Chika’s true thoughts.

Learn more about Chika by secretly reading her diary!

A Girl Who Is Afraid of Loneliness

What happens if you open Chika but leave her alone without paying attention to her...

What happens if you do not visit Chika for a long time...

Under certain circumstances, Chika will actively start a conversation with you. She may complain, or she may remind you about something.

Daily Life

Chika has her own wallet and her own needs. If her owner does not give her any allowance, she will work and earn money by herself...

When Chika feels hungry or bored, she may independently buy food to eat, or purchase new furniture and toys.

You can buy furniture and various items for her in the shop. You can also use your godlike powers and create new files with the right mouse button.

Any items Chika purchases by herself can be seen inside her little home. But if you accidentally throw away Chika’s favorite toy...

Activity Area

Assign an Activity Area to Chika and make use of her Agent capabilities.

When there is something you want Chika to help you with, you can ask her to take action through conversation!

In addition, when Chika is alone, she may decide to do something based on her mood, or decorate her Activity Area by herself!

（I asked Chika to translate the page into English.）

About Chika’s Brain

Because Chika has a complex memory and emotional system, and because her behavior and personality rely heavily on large language models, relying only on a locally operated model with a low parameter count may result in insufficient performance, missing features, or instability. Chika may become extremely stupid, speak nonsense, and fail to remember things.

For better reliability and stability, although the game supports running with local large language models, we still recommend using cloud-based large language model services.

In addition to the official API, Chika also includes a small local model to help process and evaluate information. There is no need to worry about performance requirements—it is genuinely very small.

The game will not collect, upload, or analyze any user information.

The game will not collect any local data from the user’s computer.

All memories and system files are stored locally.

The only way to submit information to us from within the game is through the feedback feature.

All functions that rely on large language models are completed through third-party API services that you personally choose and configure.