The next morning seems to come all too soon.
You do the usual morning routine without incident. You skip on eating for now. Your stomach is still a bit upset, it'd seem. You feel full and there's a lingering warmth in your gut.
You ignore that for now, instead waiting until the moment Mokou arrives. She does so at mid-morning, looking like she's got better places to be. You go see Kaguya with her.
“Hey, we're here for the swap.” You remind in a friendly tone.
“Yes. Yes. I read the note.” Kaguya doesn't look very eager to do this. “Take care of my clothes. If they rip, I”m holding you accountable.”
“Same goes to you.” Mokou snorts. “These are made to order.”
“Fancy that. Undoubtedly they can't compare with my vestments. Don't do your usual thing in them.”
Sensing that the conversation is going in a bad direction, you urge them to get the swap over with. Both of them hand over a few sets of clothes. You step outside and wait for them to change. When you see them changed, you can't help but grin like a damned fool.
“Cut that out, it's annoying.” Mokou threatens. Her usual vigor is there, but she looks much less threatening in Kaguya's skirt.
“Almost didn't recognize you there.” You say as smugly as possible, “This is definitely a good change.”
“And then I suppose that this was a poor change for me?” Kaguya speaks up. You look her over. Yeah, poor might be a bit too easy. Those usually cool-looking red trousers don't really match Kaguya's complexion. The shirt is... different. Not dramatically worse than her blouse in any case. Not to mention that the clothes seem to be a bit loose on her. Not too much, so that they fall off, but loose enough to look baggy at places.
“It's something, alright.” You conclude. “It was definitely worth it to ask you to do this.”
“I'm glad you feel that way. Now if you'll excuse me, I'm leaving. I'll be in a cave all week.” Mokou huffs and leaves with a dramatic flair.
“Buhbye!” You wave her off.
Looking at Kaguya is strange. You keep almost calling her 'Mokou'. That is, until you see the black hair and realize who you're talking to. She doesn't seem to mind that much about this. She suggests playing games, as agreed upon before, as if nothing were wrong. Well, nothing is really wrong. You agree readily.
In the end, you get used to her look and end up playing all morning. Reisen looks a bit surprised when she drops by with a midday snack, but she says nothing. No one at Eientei makes much fuss about it.
Before the afternoon is over, you report in to the clinic. You excuse yourself, telling Kaguya that you'll be back soon. Eirin does another quick checkup on you. She's professional as before, only subtly slipping in commentary here and there about you. You don't mind playing her game and take the ordeal with grace. You do note that she betrays and expression of true happiness when it comes time for your shot. It wouldn't be too far-fetched to compare her to a dog staring down a juicy piece of meat. You could picture her licking her lips as she plunges the needle into your behind again. It makes you smile. Just as well, since you barely even feel the pinch on your bottom.
There's not much else to the exchange though. She lets you go on your way. Given your desire to keep on playing, you don't think to spend any more time here, instead returning to keep Kaguya more company. Your comrade welcomes you back, having withstood the temptation to shut off the console and end the game. It's the same, dumb, enjoyable game for the rest of the evening (and until late at night). You only stop for a snack part-way through.
As unexciting as it sounds, the rest of the week isn't much different. Your mood slowly deteriorates, making want to avoid as much hardship as possible. That is to say, spend as much time possible doing, when it comes down it it, truly nothing. You feel almost compelled not to leave Eientei. It's boring, but you spend time eating, napping, and getting your injections at the clinic. There's no real noticeable effect that you can feel from the injections. No swollen body parts, birds dropping dead at your presence, or anything ominous like that. You even ask Eirin at one point if she's not just giving you a placebo.
“You're the only test subject. Why would I give you a placebo?” So goes her logic. She then goes on to explain the signs that indicate that there is some effect. It's all nonsense to you. You can't tell if your eyes look clearer or your skin slightly darker. You continue to press her on actual results. Only to be faced with more nonsense. It's been a little over week, and you really want to see results.
You nearly become obsessive about seeing change. She promised that you'd be happy. Instead you feel that you're in the foulest mood ever. You can't conceal this fact, and at dinnertime Reisen goes as far as asking if her food tastes bad. You manage a smile for her, using your remaining goodwill. Since the festival she has been talking to you a bit more, and you've had several normal conversations since then. They all do seem to end abruptly, however. It's usually Tewi or Kaguya's fault. They've been dragging you around all week. Making you play this, doing an errand here and there, and draining your energy.
“If you're feeling unwell, maybe you should tell Eirin about it. She might be able to do something about it.” She says over dessert.
“It's her fault I'm in a bad mood.” You strain yourself not to be curt.
“Maybe talking about it will make you feel better.” She suggests, more likely as an absentminded response than real worry. Still, there's something about her face... that look like she's paying her full and undivided attention to you. It makes you feel confident enough in your complaints to state them.
Your reply is long-winded. You complain about Eirin. Not just her, actually. Every single small thing that's been bothering you. You feel reluctant to do so at first, but once you start, you can't stop. Reisen's taken aback by your continuous (and sometimes foul) comments and observations. She stays perfectly still while you let out every single quirk and situation that's gotten to you.
When you're done with your rant, you leave. Truth is, after it's all said, you feel deathly embarrassed. You really shouldn't have blurted to Reisen all of these things. Especially not the criticism of Eirin. Who knows how she'll interpret that? You walk away quickly, before you're chased down by Reisen or someone else. You hole up in your room, seeking solace and time to reorganize your thoughts.
You get frustrated. You can't understand yourself right now. It's hard to concentrate. Your analytical side seems to have taken a vacation. Permanently at the forefront of your thoughts are your feelings. And they're all almost exclusively stressful. To relieve this stress you contemplate going to Eirin and complaining directly, but even now you know that to be pointless. As it stands you feel like doing nothing. If Kaguya came here now, you'd have no choice but to turn down any offers of fun playing together.
The good thing is that you're so annoyed that you burn yourself out. Your mind shuts down as you lie down on the floor. The bliss of non-conscious thinking sweeps your mind.
When you next wake up, it's already morning. You slept over twelve hours. Just doesn't seem very impressive right now. That's right, you're contemplating something very different for today. Instead of the stasis that you've been undergoing for the last week, today might just be a day for change. It takes a good gathering of your remaining will to seriously contemplate it.
 Leave Eientei for now
 Stay indoors for a while longer