If we kinda just look at that situation of bathing with Miho from a perspective of conscience, it enters the conscious mind with a concern there might be an issue of regressing to the calm known past, the already answered and over, but still existing in some ways to go back to. Regret, bothered by not making the correct choices, an unease that it happened wrongly, feelings of attachment or love even. Maybe we could say, that to his conscious mind "the girl doesn't exist she isn't real she never was" but to the subconscious (as Yuki and Largo and Erika and Kimiko and many here have picked up on) there's still nagging not well understood issues, unresolved, waiting to return. Apparently Yuki thinks it's love. Largo and Erika some sense of cheating. Kimiko a past she wants to help Piro figure out. Which the last is allegory perhaps, to the both of them working on "Kotone's story" and bringing it to life. It really only matters what Kimiko and Piro think about their relationship. She seems working towards a number of goals, he seems working on resolving his baggage.
Although some of what Piro remembers of the past isn't necessarily at all his own, which might help more explain his problems in resolving it. Powerful story type influence and all. 1st allegedly the information/emotions Largo and Piro were getting from Endgames were at least somewhat to a large extent not theirs but Miho's. To paraphrase part of her explanation: there were hidden statistics built into each character's data structure including self-worth, attractiveness, desire, love, jealousy. By manipulating these emotional statistics she was able to overpower and control large portions of the user base. Just not fully control the characters of Largo and Piro. 2nd the chats, which apparently were not so much romance as something else. They might have been mostly Piro's own thoughts, filtered through whatever Miho was doing to guide him (or he her) during the interactions. That seems to have in large part stemmed from game behaviors though (part of the emotional hack?) and then out of game her telling him about the ASF. Maybe there was also panicking about something else. The degree of honesty versus manipulation is unclear, it's pretty sketchy, only having what little Yuki talked about and whatever was in the guarded conversations Miho and Piro were having about it in the apartment store gaps bathhouse school. A point being that we don't know how much of what is in Piro's subconscious is whatever it is Miho represents, what she was, what she put there, or is himself. Whatever the details, there is an inner conflict potentially doing the equivalent of raging.
This inner conflict, that his conscience showed up at the first bathing for, seems a large part why outwardly there has been little to no expression of much romantic concern about Miho. Because it's likely not romance so much as practical, direct, and revolving around saving her and fixing her issues; but for him, not for her. That involves some return to the reminiscence of the feelings from before, which of course are real in that way they have. It's also somewhat skewed towards the unreal by their perceptional and emotional and in-the-past aspects. Which would be not so much actually about her or in the conscious mind, but instead how he feels subconsciously about the entire je ne sais quoi circumstances, events and semi-resolutions of before. Keeping in mind the endgames hacks or ignoring them, his questions revolve around some "I don't understand" aspect that he doesn't want to just flow with or to ignore any longer. Resolving this sort of thing takes a lot of work, and might not be resolvable even still, which might also help explain some of the hesitancy in doing so. Perhaps it's yet another allegorical application of what Miho has said ostensibly about others, as if he's trying to build a real her, to finally bury what she represents. This appears one way Ibara was incorrect, the truth does matter to Piro because it's what he's trying to fix, this reliance on the how it makes you feel part. Which apparently he isn't fully fond of all that how he felt in the feelings or how it's holding him back now. Perhaps that's why 'getting better fans' is otaku logic powers. Not only because you can't just randomly at will replace who the fans are, but because he is talking about himself.
So at the bathhouse his conscience isn't sure it is needed at first (a great clue the answer is no) and then quickly learns it isn't. That neither Piro or Miho are in any way actually trying to implement the past of Endgames emotions and online chatting. Yet his conscience stays, needs to learn more, wants additional insight, perhaps is even pulled into the story's powerful draw. In the following conversation, eventually Piro's frustration at the conversation itself starts him acting in ways where his conscience appears to side with Miho and then leave. Or at least that's the way it seems portrayed to us, and it's one-sided in the personification of his conscience giving us some insight into his thought processes. (Unless Seraphim is somehow reflecting the both of them.) Either way, the situation ends with nothing happening, and seemingly Piro no more with his answers than when it started.
Then we have in the room here. There is little question at the very beginning his conscience is needed. It's already dressed for the occasion (and hinting the decision is finalized), suggests things that likely are only perception, brings up rhetorical questions that aren't important (and really already answered) and that he flatly tells a number of things (what, depends upon the reader's perceptions). But there is no discussion, no seeking of advice, no need for; apparently he's answered the questions if he can be okay with letting the poor thing rest, to be in the now without trying to fix or control or fully understand the before. That it's possible to keep the feelings that one has no choice over keeping or not, and to also not have those left over feelings ruin the present. This "conversation" on letting go of the past appears unlike any before where he's trying to resolve something. Like in
a tough one big mode size and fit fault . Which are also a fairly good example of things he's never seemed to worry about when it has to do with {Moh m0h Miho Kotone}.
When it comes to "his choices" many of us like both of them pretty well, but things have just always seemed to be more tending to drift towards the future. A future that seems to have begun with being hit in the head by an errant coffee pot at Anna Millers, not being ambushed with information at Magical Cake. Maybe it's always been that deep inside most everyone logically practically realizes the matching set of Erika-Largo is more probably Kimiko-Piro, even if their emotive impractical sides feel otherwise. Although there also is always that
They just want to feel sad about it part. Piro specifically choosing gives everyone a chance to feel sad about something, even if it's not the choice itself which ever it is and why ever it is. Getting an answer can be sad. The meta aspects. And for those who might still be fixated on Piro and Yuki or Piro and Erika, most anything else happening is likely sad.
That also demonstrates something else about opinion and perception. Nobody has been wrong about either Miho or Kimiko, he clearly has some sorts of feelings for both. One set is just apparently only about an abandoned path and a little bit of data remanence. Which as he put it is no less real or important or different. Yet is also the past and memory, not the now and in the process of happening. Or at least so far it's that way.
Nothing is over yet for any notion that some side can proclaim some victory about how their perceptions seem to have turned out so far. After all, everyone is just guessing, and even if luck does constitute some sort of victory, it's not because anyone was right based upon a subjective measure of fact one can be right or wrong about. They just happened to have guessed how things happened to have went, and even that is not set in stone. And appearances can be deceiving if one doesn't have the proper context. Regardless if it's "
how i want to feel " or not.
There are at least three things. First, this today isn't over yet, even if for us the scene is. Second, whatever happens next there's a lot more in the works waiting, likely both consumer grade level and Ninj4 grade level. Third, things change sometimes, even after they've been solidified over time and sometimes before they have a chance to.