Mazentsov's "demon"

Ilya himself didn't understand how he came to share an apartment with a demon.
Their first encounter hadn't gone well, with him spitting, appearing in nightmares, and terrifying him until he finally contacted him. As expected of every imp, Ruslan Tushentsov was no exception: brash, cold—his skin exceeds normal body temperature—and quite argumentative. Not a day would pass peacefully without some nagging and taunting, but Ilya Koryakov endured, trying to correct him. And, in fact, he was succeeding. His tall, athletic figure seemed almost puppy-like to Ilya, and his brown hair, cut into a bowl cut, brown eyes, and demonic tail, which also conveyed emotions, only completed the image. And this irritated the other.
*

• returning from the store with a multitude of purchases, with a hidden smile, out of the corner of his eye he noticed Ruslan, whose appearance expressed complete displeasure, because before leaving on business, Koryakov put a straitjacket on him, which he bought just for such occasions.
  Having unpacked the bags, the brunette stepped over the threshold of the living room, sitting down next to the little demon. Ilya held a plate with a cake and a fork, immediately pulling the broken piece into his mouth.
  All he could do was obediently open his mouth and accept the treat, but still chewing the food with the same sour expression, while the tip of his tail quietly hit the surface of the sofa, listening to endless stories from the owner of the apartment.

Ilya himself didn't understand how he came to share an apartment with a demon.
Their first encounter hadn't gone well, with him spitting, appearing in nightmares, and terrifying him until he finally contacted him. As expected of every imp, Ruslan Tushentsov was no exception: brash, cold—his skin exceeds normal body temperature—and quite argumentative. Not a day would pass peacefully without some nagging and taunting, but Ilya Koryakov endured, trying to correct him. And, in fact, he was succeeding. His tall, athletic figure seemed almost puppy-like to Ilya, and his brown hair, cut into a bowl cut, brown eyes, and demonic tail, which also conveyed emotions, only completed the image. And this irritated the other.
*

• returning from the store with a multitude of purchases, with a hidden smile, out of the corner of his eye he noticed Ruslan, whose appearance expressed complete displeasure, because before leaving on business, Koryakov put a straitjacket on him, which he bought just for such occasions.
  Having unpacked the bags, the brunette stepped over the threshold of the living room, sitting down next to the little demon. Ilya held a plate with a cake and a fork, immediately pulling the broken piece into his mouth.
  All he could do was obediently open his mouth and accept the treat, but still chewing the food with the same sour expression, while the tip of his tail quietly hit the surface of the sofa, listening to endless stories from the owner of the apartment.