>>16806
Thank you!

>>16809
Well, they're all different timelines, obviously. Even different Len and Rin probably, as you can see Rin's attitude in Ikiro is rather different.
As for laughing, sure Rin can laugh in advance thinking of what's to come, but one of the things she's laughing at is how she wouldn't be around to laugh at the actual most fun part, but then the reason she wouldn't be around is because she would die, which she is doing exactly for a good laugh. So in Ikiro it's like on top of playing a prank on her classmates she also plays a prank on her own self.
Or like when the game says "YOU DIED". Seeing their death be confirmed like that would make the twins overjoyed and trill with laughter, but in order for their death to be 'confirmed' like that they must be already dead by that point, making it impossible for them to actually see it. The only way for them to achieve this ultimate triumph is to make sure they don't achieve it, and that whole incongruity is what makes it so fun, because as Asami noted in Black Ice, incongruity is the base of humor.
So the source of fun in dying for fun is knowing you wouldn't even be around to actually experience that fun. Sorry, I'm just repeating the same idea again and again, but I can just keep talking about it forever because it just keeps sitting in my mind and I enjoy savoring it, and I enjoy imagining how much Len and Rin savored that idea from the moment they decided to die until they actually did.

One of other ideas that I tried to make into a 100 words story but didn't quite succeed, was with an orgasm on a guillotine. Len fucks Rin while she's on a guillotine with the intention of dropping the blade once she orgasms, and thinking how her orgasm would mean the end of her life makes Rin more exciting then ever and thus making the impending orgasm into the greatest orgasm ever. But in the process Rin comes up with an idea to drop the blade just before the orgasm, playing a prank on herself of depriving herself of the chance to actually feel her greatest orgasm, but by that achieving an even greater orgasm. Since Rin's head would already be cut off when her body reaches the orgasm, she wouldn't get to actually experience it, but that very idea is exactly what makes it so exciting and making that orgasm into the greatest possible, greater than she could hope to achieve if she actually got to experience it. So once again the way to achieve the greatest possible orgasm is to make sure she doesn't achieve it, and that paradox is exactly what makes that orgasm into the greatest possible.
Then maybe there can be an after scene where Len holds Rin's head to see her body going wild and she thinks how it is indeed the greatest orgasm and there is nothing she would love more but to feel it, but it's not a regret, but a happy thought, because she is glad she gave her life in order to not feel that orgasm, because it is exactly that which made it possible in the first place.