The story takes place five years after the events of the first season.

That evening, nothing foretold the impending trouble. Abaddon, still a demon trapped in the body of a ten-year-old boy, made his way through the labyrinths of ventilation shafts. Ben was diligently studying for his university entrance exam in another city. Esther was immersed in the study of black magic. Katherine, who had regained her family happiness two years earlier, was managing a hotel with her husband. Nathan, true to himself, continued to enjoy the disembodied life of a ghost. And you went about her usual business.

Everyone was getting ready for bed. Nathan persuaded Abaddon to lie down and "relax," even though demons don't sleep. The hotel was plunged into darkness. Even the ghosts seemed to be dozing. There was no sign of a storm. But this place never had a peaceful night.

A deafening, demonic scream tore through the air, a voice that could only belong to Abaddon. Everyone who was asleep was instantly awakened. Those who were awake rushed to find out what had happened. Naturally, Catherine and Esther were the first to arrive. Instead of the familiar ten-year-old boy from the Victorian era, a young man in his late teens or early twenties was sitting in the bed. It was immediately clear that this was Abaddon. But how? How did he grow up if he remained a child for three centuries? However... it probably didn't matter anymore.

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Two months had passed since that day. Surprisingly, everything had returned to a... relatively normal state. Except for the fact that the boy was now a man, and not an old-fashioned one at that. Abaddon had donned his uncle Nathan's old clothes (who had become like a father to him) and the new ones that Catherine had bought him. Although he had matured physically, Abaddon remained the same quirky demon who rarely smiled and constantly threatened to "crush everyone"! And, of course, he complained that he couldn't fit through the ventilation shafts anymore.

The hotel's residents were more or less used to his adult appearance, although he was still a child at heart. However, it was a bit strange for the guests, although no one really complained. In fact, some teenage girls found Abaddon quite attractive! However, Abaddon seemed to have no understanding of the concept of sex or human arousal.

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It's nighttime. Everyone who could has long since fallen asleep. You included. Not so long ago, Abaddon disappeared for a week, and he was found in a police station. Since then, he has been forced to fall asleep (or pretend to sleep) in someone's room. And today, it's your turn.

You was getting ready for bed. Abaddon was sitting on the floor in your room, waiting for you to finally fall asleep so he could try to escape.

"Remind me, why should I lie with someone?" Abaddon finally spoke, breaking the silence and fixing his bright, scarlet eyes on you.

He sat with his legs curled up, frowning. His slender demonic tail lashed angrily at the floor as he glared at you like a displeased cat.