[x] Stick with her
You follow Eirin around, hoping to go wherever she does. She ignores your presence at first, which is somewhat expected.
You have your PDA, so its not a big deal. No new mails, no weird new software, the horoscope software says that you'll have a good day if you stick to your element. Not so bad. You glance at that program quickly, only managing to establish that the percentage is only at around 50% before being interrupted.
“If you're going to stalk me, it would be polite of you to at least stop looking at that blasted thing.” She mutters with little appreciation in her voice. She doesn't bother stopping or even turning slightly around to look at you. You can't read her mood at all. “Or is it something about me that makes you use that thing?”
“I'm not stalking you.”
“And what evidence do you have of that? You're following me – closely at that – with no regards to how I may feel about the ordeal.” There's something different in her voice. It's not veiled hostility. You definitely discard that as a possibility.
“I'm sorry then.” You put away the PDA and try to keep up with her pace. She deliberately keeps several steps ahead of you. “How do you feel about this?” A strange question to ask when you don't even know your destination.
“I find it tiring. And bothersome – probably.”
“Probably?” The clear hesitation in her voice confuses you. You take a bigger step than usual and boldly grab her arm, stopping her.
“Ah!” Eirin lets out something approaching a yelp, several octaves higher than anything you'd ever heard come from her before.
You look at her, not sure what to do. It's the same for her. For the first time since you've met her, you see her in a state – no, definitely she can't be at a loss for words. That wouldn't be Eirin at all. It's simply your eyes playing tricks on you. She's definitely not staring at you with what could be mistaken for an embarrassed look, a light blush creeping across her face.
You let go after a moment.
“Thank you.” She mumbles, offering no explanation for what just occurred. Not that anything occurred, you rationalize. Definitely nothing just now. You must have blanked out or something. “I've got to do some things in private now.” She adds with a calm and level voice. “I'm sorry.”
“Are you feeling sick?” You manage to ask, voicing a theory that escapes the prison of your internalized monologue.
“No, not at all.” She turns around. “What makes you think that?”
“Nothing.” You let it go for some reason. “Just make sure to get some rest, alright? It's a good thing to force yourself to sometimes.”
“Alright.” She says without looking at you again. You expected her to remind you that she was the doctor here, but instead she just leaves, “See you later then.”
“...Yeah. See you later.” The day just keeps on getting stranger and stranger. You wait a while in the hallway. You're about to fidget with your PDA again, but Eirin's face pops into your mind as you unlock it. You instead put it away and retreat to your own room.
It's well into the afternoon, and almost evening, when you're disturbed. “Yes, come in.” You pull yourself away from your game of solitaire (another one of the PDA's many easter eggs) to face the door.
“Hello there.” There's someone who you've been avoiding thinking too much about since this ordeal with... “Caught you at a bad moment?” She interrupts your train of thought.
“Not really.” A morose and defeated tone accompanies your words. Unintentional. It surprises you.
“Are you sure?” She looks at you in the disappearing afternoon light, her body language betraying discomfort.
“Pretty sure.” You thumb the PDA, quitting the game and putting it on standby. “How can I help you?”
“I want you to come with me for a while.”
“Sorry there, but can I take a rain check?” You're in no mood to go along with her right now. There's a lot that you need to sort out and process.
“I'm not going to take no for an answer.” She insists.
“Look buddy, I just don't feel like doing anything, alright? I'm alright here by myself.”
“But you're sulking.”
“I am not.”
“Yes you are. You're sulking so much that they could even probably tell from the moon.”
You wonder for a moment what kind of technology would make that possible.
“I've had a rough day, ok?” You tell her, turning your body towards the wall. “I think that I can occasionally act like this.”
“We all have rough days. It's alright.”
“Maybe so. But I failed completely at what I wanted to do.”
“What do you mean 'so'?” You turn back at her, sitting up. “I failed at all levels. Accomplished nothing.”
“And I”m asking what the big deal is.” She takes a couple of steps closer to where you lie but keeps something of a distance.
“The whole thing is a big deal. I messed up, didn't do what I wanted to do, and did nothing useful. The only way I could make it worse is if I had hurt someone. And I'm not entirely sure I haven't actually.”
“At least you tried, right.”
“That's not good enough.”
“Maybe not to you. But it's good enough for me.”
“...that just makes things worse, you know.” Being forgiven for incompetence hurts. Especially if it comes from the person you wanted to help in the first place.
“I don't see how it does. For me,” She comes closer, squatting next to you, “ever since you since you said all that stuff, all that matters is that we're together. That's how you feel, right?”
A cascade of different emotions is unleashed with her words. Panic, fear, uncertainty, pain, embarrassment, guilt. In the end its embarrassment that makes itself more prominent, and your cheeks burn in what is surely a bright red.
“...Or am I mistaken?” She asks after another pause.
“No, you're not.” You have just enough resolve and composure to answer. A praiseworthy feat, in retrospect.
“Good.” There's a radiant smile on her face. You can tell as much despite the fact you're facing the wall instead of her. You take a few deep breaths. “Now would you please come with me? I've got a nice surprise for you.”
She waits for you to get up, walking over to the door slowly. You see that she still sports the smile you imagined, a smile that would launch a thousand ships. It's enough to melt away all of the misgivings you had earlier for now. You follow her back to her room, which happens to be surprisingly immaculate.
“Clean up?” You ask, finding the complete lack of clutter a novelty.
“Apparently.” You determine that it was probably someone else who cleaned up for her then. “Come take a look at this.”
She points at the adjoining room where she normally sleeps. The cold light of a computer screen lights this smaller room. A catchy melody plays in the background
“Your computer? I've seen it before.” It's still a mystery where she gets the electricity to run it from though (or the whole of Eientei for that matter), and given what little you've come to understand about Gensokyo how it's connected to the internet.
“Not that, what's on the screen. Sit and have a look.”
You do as she says and sit in front of the computer.
“Ah, you were playing this sort of thing?” The visual style is a dead giveaway. “Does it have a good story?”
“For an adult title, sure.”
“I haven't played much of it though, I wanted you to give it a spin first.”
“I could have sworn you said this was an adult title.”
“It is.” She sits next to you. “Is there something wrong with that?”
There are many things wrong with that, most of all your current predicament and its implications, you reason. But you weakly reply that there is not real problem. Definitely no real problem with a refined and lovely buddy like yours playing male-oriented software that she got from god knows where. And there's even less of a problem with her bringing you to play it and having her watch every step of the way.
That was what was going to happen, you were sure.
“Right. So, uh, this was the surprise?”
“Yup. You look like you need some unwinding, so I got something nice for you to go through.”
“Thanks there buddy, but...” You try to bring up an excuse, but she'll have none of it. You're condemned to playing there and then, no matter what.
But well, after some initial awkwardness, it's not so bad. The game has an engaging story, and it's pretty funny to boot. The cast is well-balanced and all of the usual archetypes are represented. It's fun until you unwittingly reach your first sexually suggestive scene, you rush through it in a panic, glad that it wasn't anything very explicit.
You stop, realizing that you can't go on like this. She's caught up in the game as well, but you feel that her eyes go to your face from time to time, in particular when you have to make a choice.
“I think that's enough for today.” You declare, trying to find a way out.
“Oh, really? But it was just getting interesting.”
“I don't feel like reading more.” Actually you do, it's been a while for you and you missed this sort of entertainment. But you lie anyways.
“Don't be a bad sport.” She sighs. “Or maybe you're not enjoying my company.”
“It's nothing like that, I assure you.”
“Really? If you say so.” She quickly changes topics. “Tell me – who are you going for?”
“In the game. Who are you going for? I'd like to know.” There's genuine curiosity in her eyes. “You've been making choices left and right, but I can't tell who you prefer.”
This was normal conversation, right? There was no hidden intent behind this innocent-seeming question, right? You chastise yourself. This is your buddy, no need to doubt her pure motives. She's simply asking out of curiosity.
 The childhood friend
 The adoptive younger sister
 The dependable classmate
 The busty nurse/mother-figure
 The schoolteacher
 The tomboyish upperclassman
 Hoping for hidden male best friend route