Demons and infernal entities are a commonality across stories and mythology. Less common are their dark powers being harnessed not for evil, but for good. Like Akuto Sai, the demon king from Demon King Daimo. And Ashi, the daughter of Aku. It's our job to analyze their appearance, skills, and experience to see who would win a Sex Battle!
Akuto Sai's one goal in life was to become a grand high priest. From this position, and with well trained magic, he would be able to guid the world towards a brighter tomorrow.
That… all kind of went out the window when a future seeing bird who perfectly predicts future occupations declared that he would be the next demon king. High school hijinks ensued.
He tried to reject it of course, tried to focus his efforts purely on his progression towards priesthood. Said journey involved discovering a dragon, fighting several robots, demons, and robot demons, enough fan service to collect an income tax and fighting god.
Eventually he realized that being the demon king need not mean he's evil, simply that he commands all demons and be a bit rebellious to the norms; like for example his five wives, all of whom were former friends and/or enemies that were all married in celebration towards the end. Not bad for a victory lap.
In terms of powers, he of course has the ability to enforce his will onto the demons around him, and while it's never specifically shown, it's implied he can even summon or create his own versions of demons.
His magic can be channeled both as a physical force, reinforcing various parts of his body to act as armor or extremely powerful close range strikes.
If melee isn't enough, the magic can be projected outward as a powerful burst of magical light, which can be anywhere from gentle and harmless up to a sub-nuclear detonation that can blast through a mountain.
In addition to this, he has a tendencies of shifting from calm and carefree, to a sort of ultra focused combat state. Between his mind, his body, and his magical prowess, there isn't a lot that could stand in the way of the demon king.
This is just a personal note, I thought from the word go that Ashi and her sisters were literal daughters of Aku, and was confused when they tried to pass it off as a surprise. Turns out I was just being dumb and making stupid assumptions, but this time it actually paid off. Hence the many powers of Ashi.
But even in her human form, she was trained to have as many skills as Jack so she and her sisters could defeat him. She has peak human stamina, strength, speed, senses, resilience and will power.
In addition to this, she had some minor magical powers even before the demon power kicked in with her hammerspace. No, I'm not joking, that is in fact listed as an actual power of hers instead of just an animation technique. The hammer space allows the user to pull their equipment out despite not having been holding it, as though having a pocket dimension in which to store them.
Originally it was assumed that Ashi simply had some way of holding them on her person, but uh.. Yeah.. let's talk about Ashi's clothing. She has none. She's naked save for the molten tar and ash that has been burnt into her body as a sort of shell meant to emulate Aku.
Damn.
In terms of weapons, Ashi is a master archer and is well trained with a kusarigama, sword fighting, shield guarding, potentially knife fighting and shuriken throwing, and presumably hand to hand combat as well.
Ashi has little experience with the outside world, and while in her youth her curiosity was snuffed out by her training, it remained as a light within to be ignited once again.
In her corrupted form, her strength and flexibility becomes superhuman, her limbs become able to shapeshift into various weapons, which can then be lit of fire. She can fire beams from her eyes, and even summon portals to travel through time.
Ashi.. well, its hard to say what exactly happened to her. Technically speaking, she didn't even exist at the end of the series due to timeline shenanigans. But for this battle we'll assume she's been set back to her prime and remove time shenanigans as a factor. Let's see if her indomitable will is up to snuff.
Alright the combatants are set, now it's time to end this debate. It's time for a Sex Battle!
Ashi spotted the target and began to move in.
The energy coming off of him was infernal in nature, so recruitment was the goal, but if he was unwilling to cooperate, she was told she could resort to violence if so needed.
Unfortunately the moment she was within range, a bolt of blue energy came flying at her and she immediately needed to dodge out of the way.
"Woah, sorry about that," Sai said upon seeing it was an attractive female who he had just thrown his magic at, "I've been looking for a powerful demon that's been spotted in this area, so I've been a bit twitchy."
"That'd be me," Ashi said, "Well, half demon. Daughter of Aku, here to see your stance against the Master of masters." Sai smirked.
"I'm the only Demon King sweetheart. Guess I'll have to tame you."
Begin!
Seeing that this man could be potentially dangerous, Ashi rushed him, throwing a punch at him that he surprisingly caught; grabbing her fist and throwing her back. She landed gracefully and immediately ran at him again, circling around and aiming a kick at his head. He caught this just as easily, holding her up off the ground.
"Huh? This isn't clothing, what is-" Sai was cut off, the distraction giving Ashi and opening to kick his un-reinforced face with her leg and back up, drawing her bow and arrow from her pocket space and sending several arrows flying at once.
Seeing them, Sai's hand lashed out fast, the arrows burnt away by magical light. Ashi blinked at this, seeing that a change of tactics would be needed.
She threw her bow and arrows to the ground. "I'm sorry for the hostile greeting," She said, "I tend to assume that everyone's out to get me, but you don't look like the type who'd want to hurt me." She said, beginning to approach him slowly.
"Not at all, all I want is help unite people." Sai said.
"What do I need to do to.. Apologize for my actions~?" Ashi asked.
Sai gave a small smirk, "well, maybe you could let me see what happened to your body." He said, wanting to figure out what had happened to her and perhaps undo it if such was possible.
"Certainly," Ashi said as she got closer, "But first.. Let me see yours~" She said, giving a smile she hoped was seductive.
She couldn't actually tell. Sai smiled back, undressing slowly for her, showing off his muscled form. He was down to nothing but his underwear, and for reasons she wasn't quite aware of, she couldn't help but stare.
Ashi moved down, fingers wrapping around the hem of his underwear and yanking them down before he could stop her; his length stopping short of slapping her in the face as it sprang to attention. "Kind of forward aren't you?" Sai said, though in truth he was getting used to things like this.
"What can I say, I like to keep men guessing.." She said, her hand moving low in a gesture that looked innocent (well, not innocent, but not hostile) to Sai.
As it happened, she'd retrieved her kusarigama from her pocket space, swinging the chain weapon at the exposed body of the self proclaimed demon king. The result though was Sai's magic firing off from his body, breaking the weapon and throwing Ashi's body away from his own.
The force of the magic broke the tared charcoal covering on her body apart forcefully, leaving her completely naked.
This caused him to pause to look over her slender, beautiful body, but it also gave her time to get to her feet and call on her trump card. Ashi released her free will, accepting her demonic power and letting her body shift into its shadowy Aku form.
Her arm extended into a flame covered blade as she approached Sai to kill him.
Then, as she approached, the flames and blade vanished, and at his order, she turned and bent over onto her fours for him, allowing him to slam his length into her unguarded slit with her increased strength.
Ashi had embraced her demonic traits and entered a form of pure demonic energy; leaving her completely vulnerable to Sai's royal command over demons.
Sai's cock slammed to the base inside of her, grunting with the force of the powerful thrusts. It took only a few short minutes to bring her over the edge, a combination of his extreme strength and her lack of sexual experience. She collapsed, panting heavily as the demonic form regressed back into her, at least mostly.
There was enough out for her to use the powers, and remain in Sai's control; just another follower of the demon king.
Now I know some people are gonna be wondering, 'why couldn't Ashi just go back in time?' Well, quite simply, because she'd have been ordered not to. Control over her powers or not, she'd always be in demon form, and Sai's control over demons is a battle ender.
But I know what you're thinking. 'Sinful, if Sai couldn't control her, and it came down to raw sex ability, would Ashi have won then?' Well hate to break it to the Ashi fan artists out there (of which there aren't enough, I need more hentai of Ashi) but the answer is no.
Even at Ashi's most powerful, her body doesn't match Sai's power, and her non-existent experience couldn't hold a candle to the experience Sai gathered through fun with his FIVE wives. Ashi was just flanked on all sides by things she had no counter for. The winner of this Sex Battle is Akuto Sai.