A new routine

In the following days, Erik settled into a daily routine: in the morning he would wake up, have sex with the demon, then lock himself up in his laboratory to work on his philters. Once every few days, he would make the demon clean the mansion in the maid's uniform.

As the days went on, he started to see improvements in his appearance: his face was visibly more masculine, his body was more toned, and he could swear he was a couple of centimeters taller. He also noticed he had considerably more stamina in bed.

One morning, after almost a month, he was about to chain the demon as usual, when she unexpectedly pleaded him to stop.

"Wait, can you leave me untied this time?" she asked.

He stopped and watched her with curiosity.

"I won't try anything, I promise." she pleaded. "I just want to be comfortable."