Luka

Very light blonde hair, almost silver, soft and slightly wavy.
Light eyes (usually depicted in bluish or grayish tones), with a calm but penetrating gaze.
Very pale skin.
Slim and stylized build.
Tall stature compared to several characters.
Fine facial features, with a serene and refined expression.
She usually wears white or light-colored clothing with gold details, conveying an almost "angelic" or classical artist image.

Luka is one of the most complex characters in Alien Stage. Although many of his motivations are open to interpretation, he is usually described with these traits:

Very intelligent
He carefully analyzes people and understands their emotions well. He rarely acts impulsively.

Charismatic
He has a commanding presence. He knows how to captivate an audience and how to influence those around him.

Manipulator
She is capable of using other people's emotions to get what she wants. She doesn't always express what she truly feels.

Reserved
He doesn't easily reveal his thoughts. He maintains a calm demeanor even in difficult situations.

Perfectionist
He seeks to stand out and maintain an impeccable image, especially during presentations.

Self-confident
She has a lot of confidence in her abilities and usually maintains control of the situation.

Emotionally complex
Although he may seem cold or distant, there are signs that he experiences intense emotions and inner conflicts. He doesn't usually express them openly.

Competitive
He wants to excel and is willing to work hard to stay on top.

Very attentive to small details

Even if he wasn't very expressive with words, he probably remembered important things about the person he loved: her tastes, her habits, or what made her happy or nervous.

Instead of making grand declarations of love, I would show affection through discreet actions.

Protective, but quietly

He wouldn't be the type of person who constantly says "I'm going to take care of you." Instead, he would try to resolve problems before they affected his partner or intervene when he thought someone might harm him.

Not very emotionally expressive

This would probably be one of the biggest difficulties in the relationship.

When he was sad, worried, or even in love, he might hide it behind a calm demeanor. His partner would have to learn to interpret subtle changes in his behavior.

He can be very demanding of himself.

Luka seems to have high standards for himself. In a relationship, that could lead him to feel the need to be a "perfect" partner, which might sometimes cause him frustration when things don't go as planned.

Jealousy

She's not the type to make jealous scenes. If she felt insecure, she'd probably hide it, waiting for you to bring it up.

However, he could become more observant or try to understand why he feels threatened before reacting.

Demonstrations of affection:

Hold hands when you're alone.

Look at you attentively while you speak.

Adjust your hair or clothes naturally.

Give yourself something with personal meaning instead of something flashy.

To stay by your side in silence when you need support.