Mob Yandere

 [Part 4/4]

 The dog and cat's argument went unnoticed, as the seductive voice filled the air. At last, she came out of the shadows.

 Matsushige Botan, Matsuhige's granddaughter. Her clothes were a bit messy, showing flashes of the glossy black restraints that decorated her. Her cheeks were red, and her breath was heavy, hot and passionate. But that was all. She was completely, undeniably human.

 She thought her disguise was clever. In the beginning, she couldn't hide her horns, wings, or tail at all... but now, unless it observed carefully, her illusions couldn't be discerned. The old man congratulated himself on the successful mix of Nanban's fallen god genes.

 ...If Botan heard those words, she would probably punch her grandfather's face with her spiritually enhanced fist.

 "Is that so? Well then, I suppose I should make a move as well."

 The old man rose from his seat with a heavy sigh and headed towards the toilet. As he opened the door, a pungent and foul smell filled the air. The old man wrinkled his nose, a mix of disgust and amusement, as he began probing the depths with his cane. And then, it jumped out.

 "What? Don't you get stuck?"

 The cursed water snake, wrapped in miasma, went unnoticed when it was spat out because it had shrunk. It parasitized the stomach and recorded the host's five senses.

 "I would incorporate the host's factor and make it self-destruct with a time delay, if it were me... hmm, Genbu."

 The snake's escape was blocked by a giant foot. It looked up and saw a massive body. The eyes of a wild beast. Before the snake could turn around, its head was crushed. The bear paw gripped the writhing body.

 'Grrrr?'

 "Well, you can eat it."

 'Grrr~♪'

 The youkai bear devoured the cursed water snake. Botan watched it, unimpressed, and said.

 "A bit disappointing. Is this the curse that the Onitsuki family, as renowned as it is, embeds in their stomachs?"

 "This isn't the work of the Onitsuki family. It's not the lady's doing either. Perhaps it's something like putting an egg in the tea she serves. Well, it's just a prank of sorts."

 The old man spoke as he stirred the hole with his cane, his hope for a second arrow fading. Unfortunately, it appeared that no further preparations could be anticipated.

 "Onitsuki Yuusei, Onitsuki Sumire. Both are significant figures in the realm of exorcism. Do they not offer any warnings?"

 It was a question directed at the grandfather, who continued to stir the hole. No, it was an interrogation.

 The head of the Onitsuki family, one of the three families in the northern region, and the wife of the current head of the Onitsuki family, who is a direct descendant of the first Taima Nana-shi (Seven Demon-Sealing Warriors), both hold significant positions in the world of exorcists. At least, more so than the servant who has become somewhat of a monster.

 The old man pondered the dilemma, wondering if eliminating the servant preemptively was necessary. Brainwashing seemed extreme with the thought of that demon (oni), but it was unthinkable to do nothing. He too, was a person who could discard both family and himself if necessary.

 "What about you?"

 "What about, you say?"

 "What would happen to you, who is currently bound by that servant, if I were to kill him?"

 "...Unlike that foolish spider, I am not bound by a contract, am I?"

 Botan answered the grandfather with a deeply unpleasant tone. The old man groaned and rephrased his question.

 "Indeed, your life is not parasitism him. However, your body must have been optimized, right?"

 "..."

 Botan's current body is heavily influenced by a youkai. It is a desperate measure to escape death. By using the blood of Youbo (youkai mother), which encompasses the characteristics of various monsters, as a medium, the direction of transformation has been fixed with the factor of Demon (Akuma).

 She resembles what is called an incubus, a succubus, or a lustful oni in Nanban. She is not exactly the same, but she has taken on a youkai-like shape to preserve her life. The cost for this is a strong urge and drive.

 "Those individuals need a lot to be satisfied. It may be enough to fight off exorcists, but it's hard to get close to them or steal from them because of our roles. On the other hand, you have a good compatibility with them, since you are the source of their factor. In fact, even a little bit should last for a long time."

 "That's a rather late explanation, don't you think?"

 Botan spits out the explanation dismissively. The casual confirmation feels irritating to her, as if it were someone else's business. She understands it well enough, more than enough. So what's the point?

 "That's exactly why. If he was to die, wouldn't you starve? So, what's the point of suggesting disposal?"

 "...Indeed, half of my body is youkai. However, I intend to remain an exorcist at heart."

 "Are you saying someone driven by emotions, acting recklessly in pursuit of revenge, is capable of that?"

 "..."

 In the face of the biting criticism, Botan says nothing in response. She simply glares at her grandfather with sharp eyes.

 "Well then, I'll do what I can."

 When the old man speaks, Botan makes a cold smirk.

 “Anyway, that servant cannot be left alone right now. After all, there is no chance that Onitsuki's couple would fall for a simple trick, right?”

 Even if they did, they would react quickly. However, if they were to lose control of their factors and go berserk... but that's a story for another time.

 If there is a suitable chance to kill, he will take it. But he won't act hastily, since he won't get another opportunity.

 "He still has some value. We can think about getting rid of him later, I suppose."

 "...That doesn't sound like you."

 Botan spat out those words briefly, and that was the end of it. A heavy silence filled the air. Botan, filled with dissatisfaction, could only swallow her complex emotions. The old man had nothing more to say to such a granddaughter.

 It was not the concern of the old man what choices his granddaughter would make, or what path she would follow. After all, he had no obligation, responsibility, or right to impose anything on her....

 "...Oh, that's right. The extraction techniques have improved a lot recently, you know."

 "...What are you talking about?"

 As the conversation was winding down, the old man's casual inquiry broke the mood. Botan snapped back, wondering what he was up to. What did this old man want?

 "Well, you know, your bodily fluids must be running out soon, right? No matter how much you try to save and reuse, there's always a limit."

 That was precisely why she had just revealed herself in such a shameful way before.

 "...And your point is?"

 "Well, stomach acid is also a bodily fluid, isn't it? If it's concentrated enough, I thought I could extract it and crystallize it into a pill..."

 "Please stop. Absolutely, please stop!!"

 Understanding the old man's intentions of cheerfully stirring the vomit that had accumulated in the toilet bowl, Botan vehemently rejects his proposition with all her might.

 As a young woman, she absolutely could not accept that.

 "However... the inventory is quite insufficient in reality. And you don't have enough, do you?"

 The old man, who knew how she had managed until today and how she had procured it, thought there was not much of a difference. At least, he did.

 "For me, it makes a huge difference!! Please think of a girl's feelings!!"

 "A girl's feelings won't solve the problem, will they? Do you have another option?"

 "For now, that option is not available!"

 It's not just about being rational. Emotions matter. People's hearts are important. If only he had stayed silent, ignorance would have been bliss. ...Well, maybe she would have fainted if she had heard the reason after drinking. Either way, it was hell.

 "Hmm. If you put it that way, I guess there's no choice... Well then, how about this? Can you do me a favor?"

 "A favor, you say?"

 Botan flinched, recalling the conversation they had just had. She sensed something.

 "Then, wouldn't it be much easier for you than me? I'll take care of all the preparations for you. Oh, and let me do this too. Don't leave any traces, okay?"

 The granddaughter nodded and smirked. He handed her a piece of paper.

 "...You just don't want to risk anything yourself, do you?"

 Botan retorted sarcastically. She snatched the paper from him, feeling frustrated. It was annoying, but it might have been a lucky break for her at this moment.

 "Understood. Let's go."

 Matsuhige's half-youkai followed him reluctantly, with a trace of excitement and anticipation somewhere deep inside.

 "That's right. You should use this for collecting. It's made of a rubber band. If you tie it up after use, it's easy to carry."

 "I won't collect that juice!"

 The granddaughter tried her best to follow her grandfather's instructions as he handed her a small bag that looked like a free sample...

Suddenly, an image of a lewd demon onmyoji fighting while covered in used cond*ms flashed in my mind... It had nothing to do with anything, but for a moment, I remembered Rejjie-sama's combat style and felt sorry.

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