-Chapter 1: Awakening-

After the demons had vanished from the graveyard, the five offspring of the demon lords lingered to witness the dazzling radiance emanating from Stevan's burial site. As the wooden casket slowly groaned open, their amazement peaked as a white-haired girl emerged in place of Stevan's body. The girl herself was bewildered, her eyes scanning her surroundings as she took in her new form.

Stevan, now going by the name Aria, was equally stunned by her transformed body. She couldn't help but feel uncomfortable, especially when she realized the robe she was wearing was now too large for her.

"Can I get some better clothes?" Aria asked the familiar faces of the demon lords' children, chuckling as she playfully adjusted the oversized sleeves up and down.

About a week later, in the luxurious mansion of the Duchess in the Kingdom of Lustrous, also known as the Succubus Kingdom, Aria was dashing around the mansion, evading the maids and butlers who were trying to capture her without causing harm. She blushed and protested vehemently when her mother insisted she wear a skimpy lingerie set underneath her dress.

"I won't wear that!" Aria yelled, dodging and weaving through the mansion as the maids closed in on her.

"But young mistress, you'll look stunning in it. Her majesty even got it just for you," one of the maids said, finally managing to grab Aria by her tail, while the others tackled her.

"I refuse! I'm not wearing something so suggestive, even if I'm a succubus," Aria whined, but her protests fell on deaf ears as the head maid intervened and ushered her into one of the spare guest rooms.

...

Sitting on the vanity chair in defeat, Aria sat motionless as the maids applied beauty products to her face, still feeling self-conscious in the embarrassing lingerie. Ever since that momentous day a week ago, her life in the demon continent had taken an unexpected turn.

On the first day, she had met the parents of the five demon lords' children, bracing herself for the worst, but was pleasantly surprised by the respect and warm interactions she received for saving their children. To show their gratitude, the demon lords' parents had bestowed upon her their family crests, granting her unrestricted access to their domain.

On the second day, she had been instructed by the demon lords to go to the church to receive a blessing, a tradition for newly born demons. However, what no one had anticipated was that when she lay in the black river known as the River of Darkness, she had received a deadly sin - the sin of lust. It was unheard of for someone of non-noble blood to receive such a blessing, but there she was, bearing the mark of lust.

On the third day, at dawn, her body had transformed once again, turning her into a succubus, albeit a unique one. Unlike other succubi who fed on negative emotions, Aria gained power by absorbing positive emotions. Upon hearing this news, the queen of the Lustrous kingdom had eagerly invited Aria and introduced her to her sister who had longed for a child but was unable to conceive due to her condition.

In the following days, Aria had been adjusting to her new life with her newfound mother, Lucy Von Claudia, and getting accustomed to the ways of the Lustrous kingdom, as she was now part of the nobility. She underwent numerous lectures daily on how to comport herself as a dignified lady of the Claudia family, with the head maid, whom she both liked and hated, as her teacher.

On the present day, a special occasion awaited - the noble gala in Aria's home kingdom, which she couldn't refuse to attend. Her current predicament involves being groomed and pampered by her maids to ensure that she looks her absolute best, not only to impress but also to enhance her power. Despite her protests, the head maid orders the others to take Aria to her chambers to get dressed, and she can do nothing but comply. As they drag her away, Aria mutters under her breath, "I hate you, old hag," while the head maid smiles and waves.

After hours in the carriage, Aria finally arrived at the castle where the gala was taking place. The woman sitting in front of her had long, luscious black hair, a gorgeous figure like a model, and eyes similar to hers but more sharp and defined. She was Lucy Von Claudia, Aria's adopted mother.

"Dear, are you ready for your first gala?" Lucy asked with a smile, crossing her arms to support her chest.

"To be honest, I just want this day to be over," Aria sighed, resting her head on the carriage wall. She hated wearing anything feminine and considered herself a tomboy.

"You'll have to get used to it, my dear. You're a succubus now. Eventually, you'll need to grow out of your tomboy phase," Lucy chuckled as the carriage stopped, signaling the end of their conversation.

"And remember, dear, if anyone tries to belittle you, what do you do?" Lucy reminded Aria as they stepped off the carriage.

"Show them their place," Aria replied with a smile, her sin of lust oozing out of her body, captivating and enchanting like a forbidden apple.

As they walked towards the giant door, the butlers bowed and said in unison, "Welcome Duchess Lucy and Lady Aria." Inside the castle, Aria was greeted by her uncle and aunt, the king and queen of the Kingdom, and her friend Luke Lustrous, the son she saved when she was still Stevan, who was now the future king.

"It's an honor to see you again, prince," Aria curtsied as Luke chuckled.

"You know you don't have to do that. We're practically family, and you're my savior, after all," Luke reminded Aria, but Lucy walked in front of them.

"My daughter is practicing how to act like a proper lady, so don't mind her," Lucy smiled and looked at Luke, giving him a kiss on the forehead. "How has my cute nephew been?"

"Auntie, stop it, but I'm doing fine," Luke blushed as his tail swayed left and right. Aria knew Luke had always found her mother attractive, but it still felt weird.

"Ugh, pervert," Aria rolled her eyes. It was weird for her cousin to like her mother, even though she wasn't her real mother. Regardless, they continued talking amongst each other as Luke's twin sisters rushed down the long twisting stairs.

"Is big sister here?" The twin blonde succubuses said in unison, noticing Aria's presence and running even faster, tackling her when she was in the right distance.

"Gah! Fufu, hello, you two," Aria patted the twins' heads. They were fond of her, considering her as the big sister they never had. Even though they were rather touchy, they were adorable, being born not so long ago.

With all the main figures of Succubus royalty now together, they waited for the guests to arrive. Soon, the other Demon Royalty arrived with their Royal Carriage, carrying their family crest and some servants with them.