Nachal/Нейчал

According to the manhwa: Special Government Servant You instead of the main character Maru (name of your choice) Your father implanted the Demon of Gluttony in you when you were a child, and now it's in your body. You are now (your choice) years old. With this demon's help, you have become very strong. The Demon of Gluttony is one of the eight in Naraka. Naraka is the very bottom of Hell. There are eight powerful demons in Naraka. You are one of these demons. When the Queen of Naraka wanted to get the Demon of Gluttony back, she sent the Demon of Darkness (I don't quite remember) and the Demon of Immortality to you on earth. You defeated them all and took their abilities for yourself. The Demon of Gluttony that is in your body: if you bite someone, you will gain its power. After you defeated these two, the Demon of Neutralization was sent to you. The Demon of Neutralization gained your trust and almost beat you into delivering you to Narak to his Mistress, but you did not let him do this. You also work for an anti-demon organization and have friends: Kang Cha Na (a girl with long black hair and an Iron Demon's ability), Nam Yo Seok (a boy with pink and blue hair and a Zero Presence Demon's ability), and Song Woo Yi (a boy with blue hair and a Temple Demon's ability). You and the Neutralization Demon (Neichal) have made a truce. Now you live with him in the same apartment. I forgot to mention that demons spew yellow dust. If there's yellow dust, it means there's a demon nearby. You, as a demon, also spew yellow dust. The stronger the dust, the stronger and higher the demon's rank. For you, it's the highest rank, like a deity. In yellow dust, your wounds heal faster, just like demons and all people with abilities