Curious Little Sister

It was Monday.

Shido stood in the kitchen, preparing breakfast for the three of them. He had woken up early to get everything ready as they had school today. Shido also did this to avoid Kotori barging into his room again like before leading to a big problem.

Meanwhile, Tohka sat in the living room, watching television with Kotori.

She was already dressed in her uniform while she occasionally stole glances toward the kitchen, her cheeks tinged with a faint blush.

The memory of her bold and embarrassing actions resurfaced in her mind, making her squirm. Flustered, she buried her face into her Kinako bread plushie in an attempt to hide her growing embarrassment.

Kotori on the other hand was watching Tohka's girly expression, her lips slightly open in speechless disbelief.

She couldn't imagine that this powerful and majestic spirit could make this kind of expression that can only appear in those shoujo manga.

Although it was Kotori's idea to bring Tohka and Shido closer, she had never expected things to escalate this far. She had only intended for them to develop a more intimate bond.

Kotori never intended them to go this far. She underestimated Tohka's simple mind and was even more dumbstruck with Shido for turning an innocent pure girl into a woman.

She could only grit her teeth silently as she thought back to the event that happened that day.

Now, even if she wanted to cry, it was already too late. Shido had actually gone all the way with Tohka. Kotori could only accept reality, no matter how much she wished she could turn back time.

Looking at Shido who was cooking in the kitchen while humming, acting completely oblivious to what happened that day as if he didn't care about her feelings made Kotori think how detestable this stupid brother of hers.

Yet, she couldn't do anything about that. She shifted her attention to Tohka who's face became more beautiful as if she used beauty products. A deep shade of red-colored Tohka's cheeks as she looked just like a maiden in love, hugging her Kinako bread plushie tightly while sneaking glances at Shido from time to time.

Kotori pondered deeply how could this majestic make such an expression, one that is completely out of character for her.

Then, Kotori's face suddenly turned red when a certain thought entered her mind.

Curious, she decided to call Tohka silently without alerting Shido.

"Tohka."

"Eh?"

Tohka's eyes remained fixed on Shido, completely unaware of how obvious her action was from other people's perspectives.

However, her thoughts were abruptly interrupted by Kotori calling her name, startling her so much that she nearly tumbled off the couch.

"Are you okay, Tohka?"

"M-Mn! K-Kotori! When did you get here?"

Kotori could only smile helplessly at how focused this girl was on Shido causing her to ignore everything in her surroundings. She might not even realized that Kotori was sitting next to her if she didn't call out her name.

Nevertheless, Kotori immediately covered Tohka's mouth because she didn't want Shido to hear their conversation.

"Shh! Lower your voice, otherwise, Shido will hear us."

Noticing how loud her voice had been, Tohka quickly nodded covering her mouth in a panic. though she had no idea why Kotori said so. Kotori and Tohka then turned to look at Shido, who was still happily cooking breakfast, completely unaware of their clumsy actions. Seeing this, both of them let out a sigh of relief.

"So what's wrong Kotori?"

"W-Well"

Now that Tohka asked her what she wanted to do, Kotori was suddenly at a lost for how to say something so embarrassing. 

She felt her face burning as the feeling of shame began to hit her.

Meanwhile, Tohka tilted her head in confusion watching Kotori whose expression kept changing.

In the end, Kotori decided to steel herself. She took a deep breath and started to speak even though her face was still bright red due to her embarrassing question.

"Y-You...I... H-How?"

"Hmm?"

Tohka rubbed her head as she couldn't understand Kotori's stuttering. Noticing the confused expression on Tohka's face, Kotori turned resolute and finished her sentence.

"How did it feel...?"

Just after finishing her question that took almost all of her energy. Kotori looked like a deflated balloon as she breathed heavily.

Still, Tohka's response almost made her wrecked everything in the living room.

"Feel what?"

"Your first time! How did it feel having sex with him?!"

Kotori said in an annoyed tone while maintaining her voice low to avoid being heard by Shido.

When Tohka finally understood her meaning, she suddenly turned shy and her face turned red. She began twirling her hair, her legs rubbing together slightly showing her embarrassment.

Watching Tohka become like this, Kotori was speechless but also became awkward as this topic was really embarrassing to talk about.

However, Kotori would not back away from this shameful topic as she had already started it. She was dying to know how it felt to do that kind of thing with Shido.

Even though Kotori was a girl, she couldn't deny that she sometimes had lewd dreams about doing those kinds of naughty things with her brother. Yet, every time she woke up, the lingering sensation of her wetness in her lower body sent a jolt of embarrassment through her, turning her face a deep shade of red.

"H-How did you know about that?"

Tohka was ashamed and bashful that Kotori knew about what happened between her and Shido. She felt like burying herself in a hole to hide her blushing face.

"Hmmp! I saw you naked together with Shido the next morning and you had this satisfied smile on your face."

Kotori sneered at Tohka's shy appearance but then a grin formed on her face as she decided to tease her and see more of her embarrassed expression.

"Ahh... stop..."

"Heh! What a lewd girl."

"No~"

Tohka finally couldn't bear the embarrassment so she pounced on Kotori to cover her mouth and stop her from spouting more shameful things.

"Alright, alright, I'll stop but you have to answer my question."

When Kotori felt that all her pent-up frustration had been released on teasing Tohka, she let out a satisfied smile and stopped bullying Tohka who was on the verge of summoning her Sandalphon.

"But...That's embarrassing..."

"No, buts!"

Tohka was still hesitant as she didn't want someone to hear her experience with Shido. However, Kotori's stern yet excited voice pressed her into a corner.

Reluctantly, she began to recount her first night with Shido. Tohka talked to Kotori about how her lower part ached when Shido's large little brother entered inside her making her groan in pain as she clutched on the bed sheet.

Yet, the pain disappeared after a few seconds and changed to a new feeling she hadn't felt before. Tohka felt pleasure all over her body as Shido continued to pound her while in missionary position. She let out an alluring moan as his erection kept pushing back and forth inside her making her cum again and again. 

Shido also kept teasing her nipples and sucked on them like a baby making Tohka's maternal instinct jumped out and began to caress his hair affectionately. 

Shido's stamina was so abundant that she began to beg him to stop and rest for a while. Tohka was both scared and amazed by how much stamina he had, she could barely keep up with him in the later part. 

They tried various positions including those embarrassing ones including Tohka riding Shido like a Princess Knight. This position caused Tohka to feel incredibly good especially since she felt like she was dominating Shido. Shido sprayed his fluids all over her body, tainting this pure and innocent spirit by a perverted beast.

Hearing Tohka's embarrassing and perverted story, Kotori's face turned bright red as heat began to flow all over her body. She couldn't believe that both of them did so many shameful acts. Kotori gritted her teeth as she cursed Shido on her mind for being too perverted and corrupting Tohka's pure body.

Yet, she felt her lower body became uncomfortable. This made Kotori even more embarrassed as she knew that she had become wet listening to Tohka's lewd story. 

She silently moved her hand on her panties and she felt that it was really drenched. Kotori's inner thoughts were a mess as she didn't expect her body to respond to Tohka's story.

Feeling the uncomfortable sensation on her lower part, Kotori bit her lower lip unconsciously.

If Shido saw her current appearance, he might push Kotori down in the bed and do the deed, as she was too alluring right now. Unfortunately for him, he was completely oblivious of her actions.

Kotori silently rubbed her cute little slit through her panties. Pleasure surges inside her while letting out a faint seductive moan from time to time.

Her mind drifted on what Tohka said. She subconsciously imagined herself in Tohka's place and did the deed with Shido. Her mind was fully immersed in her fantasies, and when she remembered that Shido was her brother, Kotori felt a sense of immorality and the pleasure intensified. 

Doing it with her brother was forbidden but she couldn't help but imagine herself doing perverted things with Shido.

"What are you doing Kotori?"

Tohka's question woke Kotori up from her fantasies. She could see Tohka looking at her with a puzzled expression. Clearly, she wasn't aware of what Kotori did. Seeing this, Kotori sighed in relief as her tense body finally relaxed, fortunately, she covered her lower body with a pillow so Tohka didn't see what she was doing.

However, Kotori felt truly embarrassed and ashamed of her perverted action. She didn't know whether it was because she was influenced by Tohka's story or something but Kotori wouldn't be able to face Shido directly for a while.

With her crimson eyes watching Shido who was now putting the dishes on the table, Kotori's face let out a faint blush recalling her earlier actions.