Although it may feel like a nice bath replenishes your magic, it is the illusion of replenishment.
What it does is have the user's magic caress your outer aura, a generally pleasant feeling, as magic itself is a benevolent entity. Wisps and spirits are proof of this concept.
The only caster whose magic is replenished by a bath is the caster themselves. However, it is at a net loss.
Make sure never to cast a water spell used for bathing if you are completely out of mana, as you can fall unconscious in the water if you are not careful.
An excerpt from a Home Etiquette textbook.
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Artero lifted Gwyn onto the sink's countertop.
They fell into a soft and slow kiss; she spread her legs and pressed her bare body as close as she could get to him. Her legs were wrapped around his waist. He pushed himself firmly against the aching heat between her thighs. He could feel her desire through the fabric, which only made him want her more.
The soft and slow kiss quickly became more passionate and hurried. Deep and primal. He softly caressed her breasts as he continued to push himself up against her. Gwyn pushed back, and their bodies' friction caused her to moan between deep and passionate kissing.
Gwyn didn't know who was a better kisser, Artero or Elise, but they were both practiced and made her body ache with insatiable wanting.
What a world to fall into, a world full of incredibly attractive people who wanted Gwyn as much as she wanted them.
The elf released her breast and slid a hand between her thighs. He gracefully traced his finger around her heat, then slipped one finger to see if she was ready for him. She was soaking wet.
Her body was begging for him.
Artero couldn't wait another moment. He pulled away from Gwyn, both of them panting, steam escaping their mouths. He then backed away for a moment, which caused Gwyn to pause and close her legs.
Her body tensed.
Did I do something wrong?
But he stepped closer, tracing both hands down her thighs to her knees. With little effort, he spread her legs. Revealing herself to him completely.
"I shall not stop until you have to remove me forcibly, Gwynevere."
His tone was sensual and commanding.
Gwyn bit her lip and slowly nodded.
Artero kissed her one last time and slid down her body, slowly kissing as he descended. Taking only a brief moment to place his mouth around the softness of her breasts, biting her with tenderness.
He reached her navel, and there was a raging desire between her thighs. His large hands firmly grasped her things, rubbing his thumb in a circular motion.
He first kissed the outside, then spread her open and pleasured her. To Artero, the anatomy was remarkably similar to an elf, which meant, to him, he knew exactly what to do.
He devoured Gwyn whole like a beast starved of a meal. Her pathetic moans rang in his ears. He was sure he couldn't be any harder.
"Artero… Artero…"
She softly moaned as his tongue touched every spot she wished it to. Pleasure coursed through her whole body. Her fingers ran through his hair.
~Jesus, I may lose consciousness.~
Artero smiled as he heard her thoughts.
She gripped his dark hair as she pushed him further into her, gripping her thighs around his skull and interlacing her legs.
Artero loved her taste and didn't know if he ever wished to stop. But then a buzzing in his ears caused him to pause.
Someone was sending him a message.
He just ignored it; if it were important, there'd be another one.
Gwyn moaned relentlessly as he ravished her. Her body began to writhe as she leaned her head back, and the grip of her thighs loosened as the pleasure mounted within her. He dug himself deeper into Gwyn. Tongue stroking further within her and around her clitoris, softly biting and kissing her heat.
Her legs shook as he satisfied her, then she reached an edge. She gave out a high-pitched moan that cut off her breathing. Her mind was a river of pleasure. He gave her one more playful kiss on her soaked heat and stood before her.
Gwyn looked at him with fire in her eyes. She pulled him close, wrapped her legs around him, and felt his desire for her pressing firmly against her body. They kissed deeply, but Gwyn pulled him away far sooner than he wanted. Before he could protest, she said.
"Can I put it in my mouth?"
A soft, almost begging tone, she placed her hand gently on the front of his pants. Her emerald eyes stared up at him.
"Y-yes, you may."
He stuttered out, nearly fainting from the offer. Her wanting was contagious.
Gwyn hopped off the counter, and Artero quickly tried to fetch a towel for her to kneel upon, but it seemed there were none.
"Gwynevere, there seems to be no—"
She pulled him by his waistband close until his center reached her face.
"I don't fucking care, Artero."
Her words dried his throat, and he slowly nodded.
She slipped his waistband lower, making sure she had his undergarments as well, so there would be less delay, but when she revealed him.
Gwyn let out a choked breath.
"Oh."
"What is it? I can uh… make it bigger, if you like?"
Artero offered shyly.
Bigger?!
He was far larger than she thought.
"Y-you're fine… Artero."
She stared at his manhood. Wondering how even to approach it. She has only ever done something like this once before, and that was a far cry from this.
She touched him, and he immediately reacted. This caused Gwyn to giggle at his discomfort and place her tongue just under the tip, giving it a sensual lick.
Artero reflexively backed away.
"Sorry, sorry…" His face colored a deep red. "That just feels so fucking good."
This caused Gwyn to match his color and place a hand gently on his shaft.
Two more messages reached his ears. The buzzing grew louder, like a mosquito trying to burrow itself in one's ear.
"I'll go slow then."
She swallowed, trying to wet her mouth and throat.
She continued to lick the tip of him, stroking him softly. He let out a moan that seemed to be trapped in his throat.
He entered her mouth. She could feel the heat radiating from him. She couldn't get it that far, not as far as she wanted. With the pleasure he provided, it only seemed fair.
Her tongue danced around him, and Artero was in ecstasy. He placed his hands on the back of her head, gently guiding her. His fingers weaved through her hair, pulling firmly.
She moaned as she slid her mouth over him.
Artero felt himself approaching the edge, but the buzzing was now deafening. This was the first time he'd experienced so many messages at once.
He let out a sigh as he stopped the Chosen One. Gwyn wondered if she had done anything wrong.
"I'm sorry if I'm not very good, I—"
He silenced her apologies by kneeling and kissing her.
"You are perfect, I just need a moment," Artero said, beyond frustrated. "They've sent me nearly thirty messages. I need to check at least one of them."
"Thirty messages?" She said, face still flushed as she stared at his pulsing member. "Why so many?"
"That's what I'm trying to find out."
He grimaced and closed his eyes.
Gwyn thought it would be fun if she continued anyway, so she went to try to pleasure him again after almost a minute had passed, but his sudden expression made her stop.
"The Red Death has breached the Wall, just outside our estate."