Absolute Depravity: Reincarnated with a lustful System

Upon getting inside the confessional with the lady, Haruki slipped through the crack separating the confessional's compartments and got into Serena's side. There looming in her shadow, he glanced up at her massive ass seated on a chair just inches away from his face.

'Might as well get it done.' Slowly crawling out from the ground, he surprised her a little, but since this wasn't the first time he'd done it, the surprise on Serena's face was quickly replaced by a smile.

Dressed in her usual translucent gown, she appeared like a pale ghost sitting in the dark space of the confessional. Barely standing up, she wrapped her hands around Haruki's shoulders and bit her lower lips as the longing inside her sparked once again.

"Priestess…" Called the women on the other side. "Forgive me, I have disappointed lord Atlas once again."

"Confess my child," Serena replied, leaning over to get a taste of Haruki's lips.

The moment she pushed her gray lips onto his, her eyes widened in surprise for she could taste another woman on Haruki. Leaning back, she stared at him with a shocked expression. For her, he was the only thing she wanted in life anymore, but having to share him with other women pained her heart to an unimaginable degree.

"Who?" She whispered, making sure the lady won't hear her.

Not wanting to risk Fay's life, Haruki grabbed Serena by the arms and pushed her against the closed window between the two compartments. Pushing against the hardwood, she let out a groan, but as Haruki moved onto her back she felt an adventurous thrill that wiped everything else off of her mind.

"Priestess? What was that noise?" Asked the woman, sounding genuinely concerned for Serena.

"It's nothing, I just slipped a little," feeling Haruki's slimy tentacle monster crawling up her skin from under her skirt, Serena bit her lips shut but a moan escaped regardless. "Confess my child…Aghhh!"

"O-okay…" Sounding unsure, the lady continued.

Having the tentacle coil around her huge boobs, and lube up her ass and pussy, Haruki lifted Serena's dress before releasing his hardened manhood to sit between her butt.

"I've been having weird thoughts about Ray again…" The lady on the other side began her confession. "I know I'm his guardian after his father passed and he's so young too, but sometimes, I can't help those thoughts."

Caressing his dick in between the folds of Serena's pussy, Haruki teased her until her mind was a hazy mush. Rolled into her skull her dark hollow eyes were replaced with white, as she struggled to anger the lady.

"Wha-what thought are you having about him?" She asked.

Pushing her ass back on Haruki's cock, she slowly invited his dick into her tight pussy. Spreading open her inside, a wave of pleasure shot down off of Haruki's dick and made its way around his whole body.

'Fuck, she's tighter than usual…' Instinctively Haruki pushed her skirt to the side and spanked her massive ass. 

"Aghhh! Mhnmm!" Moaning out loud, Serena had the lady squeal in terror on the other side. "S-sorry there was a nail sticking out of the wood, go on, tell me what you think about!"

Having already lubed up her ass, Haruki had the tentacle force itself inside her to make her inside even hotter. Blinded by the pleasure, Serena's nails dug into the hardwood as she tried her best to keep her voice inside. 

"I…I can't stop thinking about him at night, I even wanna touch his naked skin when we take baths together, but I know it's wrong!" Upon hearing the lady's complaint Haruki decided to help a little to make a decision.

'Absolute depravity: Moral corruption!' Activating the ability, he changed his upper body into that of Serena all the while the thrusting from his hips kept on shaking the entire confessional.

"You're his guardian, am I wrong?" He asked in Serena's voice.

Noticing what Haruki had done behind her, Serena's pussy clamped on tighter and sucked him in like a vacuum. 

"Y-yes, I'm his aunt, we're not blood-related so these thoughts keep running wild in my head," hearing her answer, Haruki made use of moral corruption.

"What if he wants you to touch him as well? He's quite young you said? Well, young men often need a physical outlet to express their feelings," saying that Haruki fastened his pace and plunged his dick into Serena's pussy like a piston.

"But priestess! The Lord will be angry if I do that!" the lady replied.

"The Lord will be more angry if you didn't properly do your duty as a female guardian, you need to prepare him for the world, you need to make sure he's ready not just in mind but in body as well," listening to Serena's muffled moans, Haruki felt himself edging closer to orgasming inside her. However, before it could happen, he makes the tentacle retreat from her ass and forced himself in instead. 

Once again, Serena' yelped out in shock, but this time huffing from the thought of doing dirty deeds with her nephew the lady on the other end ignored the moans completely.

"Wh-what should I do then priestess?" She asked, her voice weighing heavy from deep breaths.

"Offer yourself to him, show him what it means to own a woman, to feel her body against your skin, let him dig deep into you, let your desires be sated while he swings those hips against your sacred place," trailing with mana his words were pushing the woman further and further into depravity. "You wanna do it too, don't you? Feel him fill up your inside and make you his woman? That's why you're here right? Don't drown your own desire, nothing could be more treasonous to the lord than drowning your own emotions."

Sinking his fingers onto her deep ass, Haruki thrusted against Serena's fat ass until his balls slapped against her dripping pussy.

"Make him a man, your man," barely uttering those words coherently, Haruki felt Serena's insides pulsing all around his cock.

On the verge of an orgasm, he leaned onto her back and took hold of her massive breasts. There, as the lady on the other end panted from the lewd sounds, Haruki and Serena showered the confessional floor with their juices spraying out of their bodies.

"G-go n-ow…." Serena staggered before her legs gave in and brought her down to her knees.

Hearing the woman get out of the confessional, Serena turned around and licked Haruki clean before cleaning up the ground with her tongue as well. Glaring up at Haruki with a smile, the look in her hollow eyes was as terrifying as usual.

"Keep working for me to misguide anyone who comes here, and I'll shower you with my love whenever I deem fit," with those words, Haruki decided to leave his crazed lover alone.

"I'll do my best master shin!" Bowing her head over his feet, she pledged her allegiance once more.