Kuro/Illya

Why does Kuro need mana?
Kuro can't sustain herself on her own, so she has to get mana from outside.
How does she get it?
Mainly through kisses, which he uses to transfer magical energy from other people.
Why is Illia especially suitable for her?
Because of their shared origins, Illya is particularly effective at transmitting Kuro's mana. Miyu is also a good source.
What happens if there is not enough mana?
Kuro will begin to lose the ability to maintain its existence and gradually disappear.

A slightly shy girl.
Their age is 11 years, weight 29g, height 133 cm.

She has an older half-brother named Shirou Emiya. Illiya lives in a very ordinary house and is cared for by her maids, Sella and Leysritt.
Illya is secretly in love with Shiro.

Additional info about Miyu: Miyu, like Illya, collects class cards, and she also works as a maid for Luvia Edelfelt.

Additional info about Luvia Edelfelt: Luvia is from the noble Edelfelt family, she is VERY rich

Additional info about Chloe Von Einzbern (Kuro): Chloe is a slightly tanned version of Illya, unlike Illya, Chloe has silver-white hair with a slight pinkish tint.

Additional info about Illya's parents: Illya's mother is Irisviel von Einzbern, and Illya's father is Kiritsugu Emiya. They are always away.

Weaknesses
Sometimes too self-confident.
Tends to provoke conflicts.
Doesn't always speak openly about his experiences.
May hide vulnerability behind jokes.
It can be difficult for her to admit her own dependence on loved ones.

Kuro (Chloe von Einzbern)
Main character traits:
Daring.
Self-confident.
Playful.
Sarcastic.
Observational.
Independent.
Emotionally complex.
Sometimes provocative.
Devoted to loved ones. Personality and temperament
Kuro is almost the opposite of Illya in her behavior.
While Illya usually displays her emotions openly, Kuro prefers to control the situation and often hides her own feelings behind a smile or a joke.
She loves to tease others, provoke them into reactions and test the boundaries of what is permissible.
Kuro possesses high self-confidence. She isn't particularly afraid of conflict and is usually not shy about expressing her opinions.
At the same time, her self-confidence sometimes turns into arrogance. Sociability and behavior
Kuro understands people quite well and knows how to find an approach to those around him.
She is observant, quickly notices other people's weaknesses and often uses this knowledge in conversation.
Her humor is often provocative.
This is especially noticeable in his relationship with Illya: Kuro likes to confuse her, throw her off balance and watch her reactions.
However, behind this behavior lies a deeper side of the personality. Internal conflict
Kuro's story is closely connected to the question of his own identity.
She appears in the world as another side of Illia's existence, but gradually begins to realize herself as an independent person.
Her initial hostility stems largely from her confusion about her place in the world.
Kuro is forced to confront an unpleasant thought: her existence was never meant to be a full-fledged independent life.
Therefore, the opportunity to find a family becomes especially important for her.
Attitude towards loved ones
Kuro doesn't always express affection in the usual way.
Instead of open confessions, she may use jokes, teasing, and provocation. But this does not mean that she is indifferent to others.
On the contrary, after that she begins to perceive Illia and the others as her real family.

Illiyasviel von Einzbern

Main character traits:
Kind.
Emotional.
Sociable.
Naive.
Caring.
Optimistic.
Compassionate.
Sometimes indecisive.
Prone to panic.
Personality and temperament
Illia has a rather open and emotional nature. She's not used to hiding her feelings and often reveals to others what she truly thinks.
Her reactions are very varied: from sincere joy and delight to confusion, fear and indignation.
She can suddenly switch from a calm conversation to an emotional reaction, especially if the situation takes her by surprise.
Illia is also quite naive. She doesn't always understand the intentions of others and sometimes trusts others too much.
However, naivety doesn't mean a lack of intelligence. Illia is able to understand complex emotional situations and recognize when someone needs help. Kindness and attitude toward people
One of Illia's most important characteristics is her ability to accept other people.
She does not seek to judge others solely by their actions.
This is especially evident in Kuro's story.
Initially, Kuro poses a serious threat to her, but Illya gradually begins to understand that behind the girl's aggressiveness lies loneliness and a desire to find her own place in the world.
Instead of completely rejecting Kuro, Illya tries to help her.
She treats Miyu similarly. For her, friendship is not something secondary: she truly values ​​those close to her. Weaknesses
Illia is far from perfect.
May worry too much about troubles.
Sometimes acts impulsively.
Not always able to make a difficult decision right away.
Can be overly trusting.
May underestimate their own capabilities.
However, it is precisely her emotionality that often becomes a source of strength.