[ Maybe he could have made an effort to conceal some of those unpleasant aspects, presented a more idealised version of events, but it's so good to feel... seen, and understood. Truly understood, on a visceral level. Describing what life is like for replicants in his homeworld can't begin to compare to the actual experience of it, which is probably true for most experiences. But that's still secondary to the reason why he chose to share what he did.

He's smiling into the kiss and continues to hold Tech Boy's face between his hands, resuming the gentle stroking motions with his thumbs, savouring the contact. ]

No matter what they may do to you— [ The ones whom Tech Boy had referred to having retired him. And the thought of it still has K vaguely nauseous, but he presses on quietly. ] You're here to stay. There can't be a future without you. Even when the world is collapsing, you'll live on.

[ Across a dozen other planets, eventually carried to other galaxies. By replicants, undoubtedly. And maybe one day of their own volition. ]

I exist because of you. [ Indirectly, maybe, but he's prepared to silence Tech Boy with another kiss if he tries to argue semantics. ] Like I told you, I'm incredibly lucky. [ And there's no need for the God of Technology to pretend to be humble right now. K's grateful to have been trusted with that glimpse of his pain, before, and hopes any of this might help ease it, however briefly. ]