***

Kakeru met Yuna and Miku at the school rooftop as promised. He looked at the twins fidgeting nervously while standing before him.

They seemed uneasy.

"So what did you want from me, that made you interfere in mine and sis walk to school? It's better not be something stupid, right?" Kakeru asked them coldly. They smile from morning absent from his face.

"Hick!" Miku hiccupped in fright. Her twin sister stood there quietly, staring at Kakeru with a mix of anger and fear.

They were scared. Too frightened to move or talk. They both froze up in terror. Their hearts pounded furiously in fear of what the boy before them could make them do.

Finally Yuna gathered her courage and spoke up. "P-please listen. We are sorry for trying to attack you at that time, so..." She took a deep breath, "that... that thing you made us do. Don't do it again."

She turned her gaze away from him.

"Nee-sama!" Hearing her twin sister, Miku clenched Yuna's hand tightly with hers. "T-that's right, don't do anything strange to Miku."

"And that thing, that strange power you have. Don't use it on us!" Yuna added.

"Aaaah?!" Kakeru asked with confusion. Then his face twisted in anger. "What did you just say to me, you stupid bitches?! Who are gave you permission to talk to me like that, huh?"

"Y-you have no right to use those powers of yours and control Miku and Nee-sama. And most importantly—"

Miku tried to look at him resolutely, but tears began running down her cheeks.

"Both of you just shut up." Kakeru glared at the two girls with contempt. Both sisters stared silently at him without saying another word. No they couldn't say anything.

Their silence infuriated him further. His fist clenched tighter than ever.

His eyes flashed red. Bloodlust filled every inch of him. His whole body became tense and hot. An overwhelming rage pulsating through his veins.

He looked at Miku. "You stay there..." then he looked at Yuna.”... and you come here." With a wave of his hand, he pointed to his side.

Yuna followed the order given by Kakeru reluctantly. She walked towards him. As she came closer, she saw him raise his arm high overhead. Then, he grabbed her hair and pulled up.

"...!" Yuna cried out in pain, unable to say a word. Her hair was yanked sharply upward. Her legs wobbled unsteadily. Tears ran freely down her face.

"Oh, stop acting tough. Look how pathetic you are, crying like a baby." Kakeru snickered. He then pulled her hair closer and looked at her face from point blank range.

"..." Miku tried to rush towards her sister, but couldn't make her body to listen to her orders.

"Hey! Don't you think you are a bit too full of yourself, huh? Answer me!" He raised his voice louder than usual.

"I... I am very sorry... for what we did earlier..." she stuttered between sobs. "Please forgive us..."

Her tears didn't cease flowing. If anything, it got worse.

"And you..." Kakeru looked at Miku again. "You say all that crap to me, but didn't you actually enjoy your sweet little time with your beloved sister yesterday? Tell me."

"Miku... Miku did not..." Miku stuttered more desperately now. She was almost in panic state. Her eyes started to dart left and right, as if afraid to answer Kakeru's question.

"Don't you actually want it to continue? Didn't you feel excited when you kissed your sister passionately? Don't lie. Come on, tell me. Be honest."

More tears flowed from her eyes. But she remained silent.

"Weren't you thinking that it was the perfect opportunity to do all sorts of things with your sister, you would normally be unable to do? You even got a perfect alibi, and person to blame to."

"B-but I only did it because you made me..."

"Hmm is that really the case I wonder..." Kakeru smiled devilishly at her reluctance. "Tell you what. If you tell me honestly how you feel, I will let your big sis you love so much, spoil you in all sorts of ways. Hmm? What do you think? Doesn't it excite you? Don't you want your sister to press her lovely little lips all over you? To kiss you everywhere. Your lips, ears, belly, feet thighs and even...?"

"You...! Miku would never want such a thing!" Yuna tried to argue against him.

"You shut up. So how is it Miku-chan? Want to be honest?" He asked Miku again. "But if you don't answer me honestly I will make you unable to touch your beloved sister ever again. Would that bother you?"

Miku gulped loudly. She looked down. A few drops fell onto the ground below.

"How dare you threaten my precious sister like that? That's unforgivable! Please don't hurt my dear sister anymore!" Yuna yelled angrily. She tried to run forward, but her legs wouldn't obey her commands either.

This tale has been unlawfully lifted from Royal Road; report any instances of this story if found elsewhere.

"No way! This can't be happening!" Miku shouted out loud in despair. She covered her mouth with her hands to keep herself quiet. She wanted to scream. Scream as long and hard as she could until someone listened to her pleas. But, she couldn't. The sound of her own voice sounded painful to hear. All sounds around her suddenly disappeared. Nothing existed but the pounding of blood inside her heart. Everything else faded into obscurity. Only the sight of her beloved sister standing before her remained clear.

When he noticed, Kakeru released Yuna's hair gently, and then he pushed her back several steps.

"Miku?" Yuna asked hesitantly.

"Miku... Miku doesn't want that to happen."

"Oh, is that so? Than tell me honestly what you want." Kakeru told her gently.

"Miku... what are you...?"

"Miku loves Nee-sama the most. So... so... „She stuttered her words.”I'm sorry! I'm sorry Nee-sama! Miku wants to be spoiled by Nee-sama always."

"No...! W-what are you saying Miku...?"

"So... so... K-kakeru-sama... please use your powers on Miku and Nee-sama..." She begged with tearful eyes. "That's okay isn't it? Just a little, just a tiny bit. Make Miku happy! Give her happiness forever and ever. Isn't this fair? Won't it bring joy to everyone?"

Miku looked at Yuna feverishly.

After hearing her younger twin sister's statement, Yuna collapsed backward. Her knees buckled under the impact of unbelievableness. She felt dizzy and faint. She dropped to the floor, holding her chest and breathing heavily.

"Okay." said Kakeru slowly. "Let's try that then. How does that sound, you two? Is this what you really want?"

The twins looked at each other in desperation. One expressed equal amount of horror and disgust, while the other showed strong desire and longing.

"No! No! No! Stop it! Don't force us like that! I won't allow you to do such horrible thing!" Yuna screamed hysterically. "Miku, why are you doing this?! Why, just why?!"

"M-nee-sama, please calm down," Miku pleaded. "It'll be fine... It will be fun."

"Stop lying! There is nothing fun about being forced to do something you hate! You are a liar! You are all liars!" Yuna screeched. "How could you betray me like this!"

As she continued screaming, tears streamed down her face. In contrast, Miku was looking at her with a mix of guilt and longing.

"Sis, please don't cry... I'm sorry. I just love sis so, so much. I just can't help it." Miku whispered softly. "Everything will be alright. Really. Sis, I promise."

"Hey, what are you waiting for Yuna. Don't you see how much your little sister loves you? Aren't you going to accept her honest feelings?" Kakeru teased.

"I... I am...!" Yuna tried to refuse, but body stated to walk towards Miku all on its own.

"Good girl. Now look straight ahead. Show me what you are capable of." He ordered her.

Soon she was in front of Miku. Their faces were mere centimetres apart. For a moment, their eyes met. They both froze. Each feeling fear or excitement.

"Ugh! I hate you Miku!"

"Nee-sama!"For some inexplicable reason Yuna's hateful and reluctant gaze made Miku even more excited.

'Nee-sama is staring at me so much.'

Then, with a sudden movement, Yuna closed in quickly and hugged her little sister tight. She buried her head in Miku's shoulder. Then she wrapped her arms around her waist and pressed her cheek against Miku's stomach. Her nose touched the soft skin of her abdomen.

She sniffed deeply. Smelling the scent of the girl's sweat mixed with perfume.

This smell brought back memories from last night. Memories of her passionate kissing with Miku. Of her gentle touches along her thighs and breasts. And finally, her sweet tongue licking her neck and shoulders. When Yuna inhaled deep enough, her lungs burned with an unbearable heat. It wasn't pleasant, but also not unpleasant.

Tears welled up once more in her eyes. She trembled violently while trying to hold them back. Yet no matter how hard she struggled, they kept coming faster and harder than before.

They lay down on the ground together. Yuna reached for Miku's shoes and took them off slowly. She took off her socks next. Finally she grabbed Miku's left foot with both her hands and lifted it up towards her face.

"Nee-sama...!"

There was a slight hesitation in her actions, but soon she began to lick the sole of her toes delicately. Licking up every single drop of sweat there was.

Saliva and sweat mixed with tears dripped down from her chin. As it fell upon her sister's foot, it created a warm wet sensation.

'Nee-sama is kissing my fingers so passionately! Nee-sama! Nee-sama!'

With trembling hand, she caressed Yuna's hair.

Strange warmth spread throughout Miku's whole body. Like fire burning away any remaining doubts within her mind. 'Is this real?' She wondered. 'Was this really happening?'

Slurping noises filled the air as Yuna licked her sister's feet clean.

'What have I done...? What did I just let myself do?' She thought wildly.

Her thoughts became increasingly chaotic as her body betrayed its growing desires. Soon her emotions overpowered her willpower and instincts. Her consciousness began to fade into oblivion. Before long, everything was lost in darkness and blissfulness.

Miku soon couldn't resist anymore. With shaking hands, she pulled Yuna closer to her. Closer still until their bodies touched firmly. Warmth ran through her entire body. Heat and pleasure rushed to all parts of her nervous system. Her senses heightened sharply. Every pore opened and released scents that intoxicated her further. Pleasure surged beyond anything she had ever experienced before. Waves of ecstasy washed over her repeatedly. Until eventually it consumed her completely. She forgot who she was, where she came from and what happened earlier today. All she knew now was that she loved Yuna so dearly. That she desired her above all others.

In fact, it seemed like it was already too late anyway. She didn't care whether it was right or wrong. She simply wanted to give her sister all the affection she could. And get all the affection she wanted.

Without realizing it, her heart beat rapidly. Faster than ever before. Her pulse raced outwards. Filling her veins and arteries with hot blood. Making her limbs tremble uncontrollably. Her heart pounded so hard she feared it might explode at any second.

All of these sensations combined gave birth to another emotion: lust. Lust for her sister's body. Lust for the taste of her sweat. The scent of her skin. The ticklish feeling of her lips. Even the softness of her belly button. And most importantly... the smoothness between those silky thighs.

Lust for the woman that meant so much to her. Lust for the person whom she cared about more than anyone else in the world.

"Nee-sama I love you so, so very much."

Those words were barely audible. But when they escaped her lips, it sent shivers down Yuna's spine. Her words almost scared Yuna. In a daze, Yuna stared at her younger sister. Eyes full of devotion. Love and trust were directed at Yuna.

'Did she say she loves me? Then way did you betray me like this? Do you realize what you've done?'

"I hate you! I hate you so much Miku." Yuna said and kissed her sister's lips with passion. "You are a terrible, evil, traitorous sister!"

Their tongues intertwined with one another. A kiss unlike any other. Neither of them knew exactly what was happening to them. Both were caught unawares by the intensity of the emotions coursing through their bodies.

Kakeru watched them for a while at the beginning, and then he walked away as if losing interest. Before he left the rooftop he said:

"Oh, right, right. I almost forgot. From now on. You will join my sister Yuu's Supernatural Research Club. Understand? Hahaha, I wonder if that idiot will be able to tell that you are actually monsters, parts of the supernatural she is searching so desperately for."

He chuckled and disappeared.

***