Personality 

Smiling |
| Though through things such as text, she may seem energetic and upbeat, she is actually the opposite. She is able to feel her emotions, but cannot express them. She’s able to do it through the media, just not in person.
If you were able to actually see her emotions, you could tell how she is prone to anger, and is quite sensitive. The moment something she dislikes happens, she would burst out in tears and start screaming at everyone, saying incredibly rude remarks. |
Despite not being able to show her feelings, she’s most commonly smiling. She doesn’t feel happy, it’s just the only feeling she knows how to show. By simply smiling, she believes that it’s saying she’s feeling alright, and that’s good enough for her. Sometimes however, her constant smiling makes others think of her as sadistic.
She is, in fact, sadistic. She enjoys seeing the pain and suffering of others, along with their fear. She’s also openly jealous of her victims for the fact that they can show their own emotions, unlike her. |

No feelings |
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Ability  Main article: Heavenly Slumber
Her ability allows her to sing to others, causing them to fall asleep. Once asleep, she’ll fall into slumber as well, entering that person’s dream. In the dream, she causes a nightmare, and captures them in that dream forever, never to wake up again.
She herself needs to sleep for an hour in order to trap people inside their sleep, this is a big drawback as it leaves her completely vulnerable. Because of this, she normally just uses the sleep part of her ability before escaping the area or killing the person by hand.
Once trapped in the nightmare, the victim is not dead. Instead, they are in a coma, one they can never awake from. |

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Allows her to trap others in a dream Allows her to induce sleep upon others |
Vulnerable while trapping others |
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Background 

Young Irina |
| When born as a child, she was unable to show her emotions. Her ability was already out of control, causing her to be shunned. Her parents thought about sending her off to an orphanage, however, they decided against it in the end.
While growing up, she was mistreated. Her family hated her due to her issues, and neglected her. The only one who ever showed slight kindness to her was her elder brother, Fyodor. Although it was most likely for an alternative motive, this led to Irina being increasingly attached to Fyodor, developing a slight obsession towards him. |
Irina was either ignored, or harmed both physically and mentally by members of her family. Her mother merely wanted to have her show emotions, no matter the cost. Her father, on the other hand, purely disliked her.
At one age, she decided that she couldn’t take this anymore, because although she couldn’t show it, she definitely felt strong feelings. She used her ability on all of her family members except for Fyodor, and trapped them all into an eternal sleep. To this day, she still regrets this decision, and refuses to tell anyone even the slightest detail.
She grew up in a religious family, causing her to also be. She believes strongly in God, just like her brother. She also believes that what she’s doing is a blessing from God himself. This happened due to how her family pressed their religion onto her, not letting her believe in anything else.
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