Yoshiki saying that he doesn't have romantic feelings for "Hikaru" is so important to emphasize for me because not only is it good queerplatonicism but it's so thematically important! It reinforces that Yoshiki recognizes "Hikaru" as his own person and appreciates their relationship on its own terms. And it still honors Yoshiki's feelings for Hikaru [og] as more than something to move on from. As a story about grief, it is much more sophisticated than the cliches of ‘life goes on’. That's part of why the beach scene and "Hikaru" NOT going back to the mountain is so subversive. It's not just "you lost your love but you'll find another one" but "you lost one love but you still have all these other forms of love to get you through it". It's why Yoshiki opened up to his friend Asako and his mother before he reciprocated his feelings for "Hikaru" (plus other plot reasons but y'know the medium is the message). It's the richness of life, the variety and diversity of it, that makes it worth it to keep on living because that richness is always there even in the grief—the grief is just as rich and complicated—and that's part of what makes it tolerable. We're not just waiting for something to replace what we lost, we're finding new things, we're recognizing the importance of the other things in our lives because that's what gets us through it, not just the vague possibility of something else similar to it eventually coming along.
Yoshiki inelegantly bounces from one feeling to the next of "Hikaru" can be helped to "Hikaru" is evil like a ping pong ball and that polarization is a huge part of his inner conflict, but it's also something that keeps him from getting locked into one position and allows him to avoid the bad endings. His greatest weakness is also his greatest strength, it's why he's such an effective horror protagonist! And it's important that early on in the story, one of the things Yoshiki would sell-flagellate about is his inability to move on—how he should move on. Even though it's important Yoshiki doesn't see "Hikaru" as a replacement, he's still not just moving on from Hikaru to "Hikaru". Precisely because "Hikaru" is not a replacement. It's supernatural relationship anarchy! And relationship anarchy is absolutely relevant when it comes to how strong someone's social support system is in the event of grief. So I think it is incredibly important that Yoshiki opens up more to Asako before he does with "Hikaru". Even in such a suffocating environment, that Yoshiki is able to have a safe space that is not exclusive to Hikaru or "Hikaru".
And it's also why it's important that impurities are incomprehensible entities that elude simple forms or general understanding. But also that impurities aren't categorically different things, because they are still human souls. What that's gesturing towards is even while we're alive, we possess an element of incomprehensality to us. Because grief is complex, and you don't just move on from it sequentially.
