Today's portion of Black Ice (work in progress).

…
“Oh!” Len’s eyes lit up. “That gives me so many ideas! Mainly of the ‘being crushed’ sort”.
“Sounds great!” Rin supported his enthusiasm. “Even more fun things we’ll never get to try out”.
“Indeed,” Len agreed. “Like we could…”
“Wait”, Rin put a finger to his lips. “Don’t tell me”.
“Why?” Len asked puzzled, but the next second realized: “Ah, it’s so that you would never even know what awesome things you’re going to miss!”.
“Exactly”, Rin confirmed. “Learning about them would be fun in itself, wouldn’t it?”
“Rin, you’re a genius!” Len said in sincere admiration.
“Oh, want something even more genius?” Rin asked, rolling off from Len to his side, so that now they were laying in parallel without touching each other.
“What do you have in mind?” Len asked with enthusiastic interest.
“So you want to finish that game you were playing, right?” Rin apparently started from afar.
“You even ask!” Len answered. “It’s just mind-boggling! And I can’t even imagine how much better it would be in VR. That’s something I just have to see with my own eyes!”
“And it’s the same for me”, Rin agreed, smiling at seeing the earnest passion in his eyes. “The book I was reading is so interesting, the plot is so intriguing, I absolutely have to see where it goes. And the violin, ah, the violin, its sounds are truly magical, so in a sense learning to play it is like becoming a magical girl, how much I would love that is just beyond words”, Rin said with dreamy voice.
“So what are you trying to say?” Len asked puzzled. “Because you almost sound like you don’t want us to kill ourselves after all”.
“What?” Rin was taken aback by such a proposition. “No, that’s exactly why we should do it!” she adamantly insisted. “I was just leading to the point that focusing our thoughts on all the fun we wouldn’t get, we have missed the most important”.
“What can possibly be more important than fun?” Len chuckled, finding that idea absurd.
“That we have each other”, Rin explained, looking straight into Len’s eyes. “And now we won’t”, she spoke in a deliberately soft and calm voice.
Len had to take a second to process that thought.
“See, I’ll never have you anymore”, Rin whispered almost if afraid that if she spoke it loudly it wouldn’t happen.
“And I’ll never have you”, Len understood, speaking in an equally low voice as the realization took his breath away.
“We’ll never be together again”, Rin uttered a bit louder, as her excitement grew stronger.
“We’ll never be at all”, Len continued, as if the twins were caught by a whirlpool of reinforcing each other’s delight.
“We’ll never share another kiss,” Rin said breathily, as her eyes were expressing the most desperate desire to press her lips against her brother’s that she ever felt, yet despite how close they were, she made no attempts to act on it. But she didn’t try to suppress the desire, quite the contrary, she let it spread over every cell of her body and conquer her soul. And the more that desire started to define her, the more funny it was to make sure she would never have it fulfilled.
“Never hug each other,” Lin replied in manner, his return gaze starkly expressing similar lust that swept over him to grab Rin’s body in one last most loving embrace, but exactly because of how unbearable that longing was, he kept lying perfectly still, only smiling widely.
“Or hold hands,” Rin continued, reaching for her brother’s hand.
“What the?!” Len jerked his hand away a moment before Rin would touch it.
“Just kidding”, Rin chuckled, her playful eyes telling she knew he would remove his hand.
“Oh”, Len realized, “we’ll also never play another loving prank on each other”.
“We won’t even love each other anymore”, Rin pointed out.
“Because there won’t exist any us who would be capable of love”, Len concluded the thought.
“Ah, I never contemplated just how much joy there is in simply being alive,” Rin said dreamily. “Now I want to live more than ever!”
“So just how fun it will be to kill ourselves while having such an earnest desire to live!” Len continued Rin’s obvious thought.
“Not just while”, Rin corrected. “But exactly out of that very desire!”
“It will be the best laugh ever!” Len said.
“Right, only how would we laugh when we’re dead?” Rin chuckled.
“We won’t”, Len admitted. “We’ll never get to actually have our greatest laugh!”
“And that’s exactly what makes it so great!” Rin concluded.
“So let’s go and drawn ourselves already”, Len said, finally getting up from the ice.
“Wait a moment”, Rin almost grabbed his hand out of habit, but stopped herself in time.
“Why?” Len looked back at his sister with a puzzled gaze. After the twins charged themselves with such a raging passion for life, how could she wait another moment before killing herself? Surely she wasn’t going to make it even more meta by saying that now after making sure their death would be as fun as possible they should stop and not kill themselves? Because if it went that way it risked just entering an endless cycle of swinging back and forth between living and dying.
“That black ice gave me an idea”, Rin said, “how to make our drowning even more fun”.
“Is it even possible?” Len was startled. “We won’t even get to experience the actual fun, because for the very sake of achieving it we’re going to die. What can be more fun than that?”
“That’s the result”, Rin answered. “My idea is to make the process of dying fun too”.
“How?” Len asked, intrigued.
“You should dive first and float up flat against the ice with your face up”, Rin explained.
“And then what?”
“Then you’ll see for yourself”, Rin smiled slyly.
“Or maybe I won’t?” Len guessed with a growing grin.
“Or maybe you won’t”, Rin chuckled.