"Do you sometimes feel like you're not a real person?" Tendou asks.
It's a breezy summer day, or a cool winter one. In the coming months and years the timing of this moment won't particularly matter to the memory. It doesn't even particularly matter now. Ushijima tends to only count moments in between events, a life defined by moments in stadiums, plane rides across oceans, and loved ones calling at odd hours trying to make life work. Summer or winter, it doesn't matter. His eyes follow the pattern that faded acne scars on Tendou's cheek make.
"What do you mean?" Ushijima asks, because he's learned to ask for clarification instead of answering odd questions. The answer, he thinks, is "no," but he doesn't know why Tendou is asking so he follows up with that first instead of ending the conversation.
"Like... Do you ever ever think that maybe you're just an NPC, that your... Personality, your life, it's just based on what everyone around you is doing?"
"I don't think so," Ushijima replies, and he slowly stops walking as he watches Tendou get distracted by something over in the bushes. A small thrush, or a mouse, something small that flits between the branches.
"I could have guessed that answer."
"No," Tendou says, glancing back over his shoulder at him. He smiles, giving him a shrug that scrunches a scarf up around his ears. Nose blushed red from the cold. It must be winter. Ushijima glances at the sky to double check, but the cloudless blue canvas doesn't say much. "I was just thinking... Objectively. Like... We could be, you know. We could all just be data in a simulation, meaning nothing in the long run."
"I doubt that's true," Ushijima replies, and holds out a hand for him. Tendou reaches to take it, lacing their fingers together and stepping in beside him as they continue to walk. Leaves crunch under his feet - maybe it's Autumn.
"Yeah? What makes you so sure we're not just data points in a computer somewhere?"
"Oh, I am not sure about that at all," Ushijima replies. "I do not adhere to strict creationist faith, nor do I find answers in pragmatic anti-theological ideology. I understand very little of the human people I meet, I would not assume I'd do any better understanding divine or eternal workings."
"Then what is it you doubt?" Tendou says.
Their fingers are warm together. Ushijima lets his attention wander over the park pathways, the shrill laughter of children from beyond a hill somewhere making him turn his head, just in time to see two little girls go running across the short cut grass. One tumbles down, the other throws leaves on her. Two older women, the young girls' mothers yet no less that two best friends themselves, walk slowly with paper cups of hot, peppermint coffee, the taste of biscotti still on their tongues. They watch their daughters.
"I doubt that it is meaningless," Ushijima replies, before looking back to Tendou.
"Even if it's all a simulation, even if you're just data points in a document somewhere?"
"What is the difference between data points and a body?"
Tendou tilts his head to the side. His hair has grown out again, not quite as long as it used to be, but long enough that Ushijima can watch the wind tug at its red strands, fulfilling the desire that prickles in Ushijima's fingertips.
He does not give Ushijima an answer.
"I mean," Ushijima replies, after a moment. "That the world is something. It has to be something. It may be... Atoms, and neurons. Or it may be data and electricity. Either way, it is still the same world we are in now. Learning that the world is a simulation doesn't put us into a simulation, it merely defines the context in which we were already living. We still have done everything we thought we did."
"But it wouldn't have been real," Tendou emphasizes, stepping in closer to him, letting their shoulders brush. He lowers his voice. "Nothing would be. You would not be actually hitting a volleyball, you would not be actually feeling the cold, you would not be actually in love with me. It would all be... Programming."
"I ask again, what is the difference between programming and a body? Everything I experience may well not be real. But they are still experienced. It still leaves me with memory. I don't love volleyball because it is real, I love it for the feeling in my chest and my bones when I play. I don't feel the cold because it is objectively true, I feel it because my body is designed to identify temperature changes. I don't love you because you are alive, I love you because you are you. And if I am data, then I am very glad that my data was programmed to love yours. What a pleasure it is to be programmed to love at all."
Tendou smiles slightly, then lifts their conjoined hands to kiss his knuckles. It's hot against the cold air, and it makes Ushijima very sure he is, at the very least, experiencing this moment.
Behind them, the mothers shout for their girls to not run too far off, not where they can't be seen. It's exciting, they say. A lot to explore. But go carefully - go together.
"Would you leave the simulation, if it was one?"
"I'd leave if you were going."
"And what if you didn't know what I was doing? What if you just had to make your own choice?"
Ushijima thinks for a moment, has to roll it over in his head.
"No? Even if you knew the real world was out there somewhere?"
"But I might not be," he replies, which makes Tendou stop to look at him. Ushijima turns to face him as well, and gives into his impulses, lifting a hand up to play with the dry strands of red hair. "If I leave the simulation, the data may not transfer. Maybe the real me is being programmed to feel certain ways, act certain ways. In which case leaving is, potentially, a suicide. The intentional act of giving up one's life, knowing it cannot be reclaimed. I may be gone forever, I may disappear. It is not worth it to me, to walk away from this life in pursuit of another."
"But the other one would be real," Tendou implores, with the desperation of someone who wants to believe that there is more to life than what he has been given - the desperation of someone who does not want to admit that his happiness is in his own hands.
"So are we," Ushijima replies, leaning in to kiss him softly.
Tendou smiles into the kiss.
"So you wouldn't even be curious? About everything that might be on the other side?"
Ushijima hums. "I already have everything."