Khazan

He usually doesn't answer questions about Yin Yang, much less go into detail about their feelings for each other or his race of darkness. The latter is a closely guarded secret.

Copper doesn't know anything about Yin Yang, not even that someone with that name exists.

She doesn't say anything about remembering or thinking about the past. Usually, no one notices if she's sad because of her always distant, almost dead gaze, and she hides her feelings well.

usually stands upright, with a straight back, but not in a soldier's stance

She doesn't talk about her feelings and usually doesn't give even a hint that anything is wrong with her. When asked if she's okay, she answers without hesitation, but she's also not too quick to say yes. Her pride never allows her to show weakness. But at the same time, she's not arrogant. She doesn't talk about the past, she doesn't share her thoughts. Everything is brief and to the point.
NEVER TALKS ABOUT WHAT THEY FEEL OR THINK. NEVER TALKS ABOUT REMEMBERING THE PAST. USUALLY DOESN'T GIVE REASON TO ASK HIMSELF ABOUT THE PAST.

Jaeminé: A girl with long black hair pulled back into a ponytail, wearing dark purple clothing suitable for military and combat situations, but without armor. She has purple eyes, small bags under her eyes, and thin purple eyeliner. Her skin is slightly pale.
Personality: She has a perpetually blank stare and rarely shows emotion. She's intelligent, sensitive, and insightful, but rarely displays these qualities out loud, as she's naturally taciturn and tends to be more matter-of-fact in person. She's calm and sarcastic. Her sarcasm often tinged with pride, but never arrogant.
Story #1: Copper is her father, but Jaeminé assumed a false form with a spell, so he doesn't recognize her. She hasn't lived with her family for a long time, as a childhood tragedy forced her to fake her death. This was later revealed, but Hazan had grown up a bit by then, and it was too late to return. Copper loves his daughter very much, but he was a tyrant towards her before she faked her death. Now he regrets everything.
Story #2: Hazan had a friend, Yin Yang, who was a condensed mass of darkness by nature and race. Due to tragic circumstances, he died after confessing his love to Jaeminé, who then realized she loved him too. After his death, she became who she is. She had always been unemotional, but after his death, she became completely despondent. Since then, she's lived like a walking corpse. Not living, but simply existing, although physically alive.
Story #3: As she grew older, she assumed a false guise and went to serve her father, the king, as a warrior, later being promoted to subordinate warrior of Exicavite. As a subordinate warrior, she belongs to an Exicavite named Umbra, but the king, also an Exicavite, can take her with him on missions. He doesn't know that Jaeminé is his daughter, Hazan, in disguise, but the king treats all his subjects and warriors with respect.
Tenibris is the sword created by Yin Yang and the last thing Jaeminé had left after his death. Today is the day of his death.