Chapter 15: Sisterly Heart-to-heart

"Sis, your face is so red. Are you sick?"

Seeing Marina walk in, Airi turned her head and spoke with a worried look in her moist, slightly flushed eyes.

"Don't worry, I'm not sick. In fact, Airi, your face is even redder," Marina replied, her purple eyes full of a hint of melancholy as she gazed at Airi.

"This...?" Airi blushed and buried her face in the water, feeling embarrassed. Noticing the sorrowful look in Marina's eyes, she immediately pieced together that it was likely because she and Blake had been loudly occupied for three hours, waking her sister up.

Seeing Airi's reaction, Marina sighed and silently began to wash herself. Why was it that her ex-boyfriend and Airi's boyfriend were so different? It felt like heaven and earth.

"Sis, I know about what happened between you and Masato today," Airi said, hesitating as she gazed at Marina, who had a sorrowful and slightly wistful expression on her face, and slowly spoke.

"...Masato... Blake told you, didn't he?" Marina's body stiffened at the mention of his name. Her voice lowered, and she turned her head away, seeming to avoid letting Airi see her expression.

"Sis, you don't need to be upset over someone like that. After all, you never liked him. As for boyfriends, I think someone like Blake is the best," Airi spoke calmly, though she had noticed the subtle difference in Marina's tone.

"...Blake... a man like isn't someone you encounter every day," Marina replied with a sudden spark of jealousy and admiration in her eyes. She was still consumed by thoughts of Blake, fantasizing that it wasn't Airi with him, but herself. As soon as she realized what she was thinking, she struggled to suppress the shameful desire to steal her sister's boyfriend.

"Huh, Sis, you like Blake, don't you?" Airi said with a sigh, as though she had just confirmed something.

"...A-Airi, what are you talking about? How could I like him? He's your boyfriend!" Marina's face turned pale with panic as she waved her hands frantically, unable to look Airi in the eye.

"I thought so. But I guess it's normal, since Blake's charm is undeniable... especially after what happened today," Airi said, her voice light, as she watched Marina's flustered reaction.

Realizing she had completely exposed Marina's inner thoughts, Airi couldn't help but smile and cover her face, muttering to herself. Marina stood frozen, unsure of how to respond.

"Sis, come in. I want to talk to you," Airi said gently, her tone calm.

"Airi, I'm sorry..." Marina hesitated for a moment, then walked toward Airi, entering the bathtub. She lowered her head, feeling guilty.

"I'm not angry at you, Sis. In fact, I want to support your love life," Airi spoke up suddenly, causing Marina to look up in shock.

"Eh, it seems like your... has grown a bit. How enviable!" Airi, with a playful grin, suddenly hugged Marina and fondled her, making her let out a surprised cry.

"A-Airi, stop! What did you mean by that? Blake is your boyfriend! I won't allow you to break up with him just to make room for me!" Marina quickly grabbed Airi's hands, desperately asking.

"Of course not, Sis. I'll support your love life, but I'm not breaking up with Blake," Airi replied seriously.

"I don't understand..." Marina murmured, still confused.

"Anyway, I want you to be his girlfriend, too!" Airi said with a wink.

"...That's impossible!" Marina's purple eyes widened in shock, her face flushed as she exclaimed. What was this? Being a girlfriend of the same man as her sister? She had never heard of such a thing!

"Why not? Sis, I used to look down on men who only think about lust and looked at us like a piece of meat. They didn't deserve someone like me or you. But Blake is different. He's strong, reliable, and gentle, and most importantly, he can satisfy both of us," Airi said seriously, though by the end, she got a bit carried away.

"Airi, how can you say something like that...!"

Marina exclaimed in panic, as if her worldview had been completely upended. However, the sparkle in her moist, violet eyes betrayed her hesitation. Deep down, she was tempted; it was just her girlish pride holding her back.

"I'm not saying anything wrong. As far as I'm concerned, the only man worthy of both my sister and me is Blake. Besides, we both like him already. I don't want to see you hurt over this, so wouldn't it be better if we just..."

Airi continued her persuasion, though she didn't mention one crucial detail: she couldn't handle Blake alone. Otherwise, how many girls would willingly share a man with someone else, even if that someone was their beloved sister? Most would agonize over such a decision for a long time.

"...."

Seemingly swayed by Airi's words, Marina lowered her head, saying nothing as conflicting thoughts battled in her mind. If Airi didn't mind, why should she care so much? No, no, this wasn't right. Sharing the same boyfriend with Airi? That was unheard of!

"Hmph, you don't know what it feels like, do you, sister? It's actually quite nice. Let me show you. I remember you've never tried self-relief before, have you?"

As if sensing the crucial moment, Airi suddenly moved again, pinning Marina down. Shockingly, her fingers slipped in!

"Ah! Airi, stop it!"

Feeling a tingling sensation, Marina let out a startled cry.

"The book says doing it more than twice a day is bad for your health."

"Oh? What does that mean? You'll have to explain it to me thoroughly!"

Hearing this, Airi paused for a moment before smirking mischievously, her actions growing even bolder.

That scarlet night passed just like that. In the end, Marina was persuaded by Airi, and under Airi's suggestion, they discussed many plans to win over Blake.

As for this seductive scene, Blake missed it entirely, as he was engrossed in his training through the night.

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(A/N: Throw your power stones and comment on this book, please! It will motivate me!)