Since that day, I've been physically intimate with my sister every single day without fail. There were times when she took her time and loved me all day long to make sure I wouldn't pass out. In fact, that's pretty much the only memory I have recently. Realizing that this indulgent lifestyle was getting out of hand, I decided to bring it up with her when we had a moment to catch our breath.
"Hey, Sis… maybe we should, you know, cut back on the frequency a bit?"
"Why? I want to make up for all the times we couldn't be together by loving you as much as I can. It still doesn't feel like enough. —Kaya, do you not like it?"
"It's not that, but… this is a bit much. How about this? I want to love you too, Sis."
It's because I don't hate it that I'm in trouble. If this keeps up, I'm going to become completely useless. Worried about where this was heading, I came up with an idea to avoid a situation where only I ended up feeling good. Besides, it's always been my sister doing things to me, and I've never had a chance to do anything for her. However, my sister immediately responded.
"Of course, but let me love you while you do."
"But then, that kind of defeats the purpose…"
If we did that, I'd feel so good that I wouldn't be able to do anything. When I hesitated, my sister looked at me with a worried expression and continued.
"If you really don't like it, Kaya, I won't do it."
That's unfair. She knows I can't say no when she makes that face.
"…It's not that I don't like it."
"Then it's okay, right?"
The worried expression she had earlier disappeared in an instant, and before I knew it, we were back to where we started. And so, I ended up spending the rest of my summer vacation indulging in this unhealthy routine. When I woke up the next day, the clock had already struck noon, the opening ceremony had ended, and I ended up missing the first day back after summer vacation.
This is bad. What's really bad is that I don't dislike this at all. Honestly, I'm happy that my sister keeps loving me like this, and it feels so good that I can't stop. But rationally, I know this can't go on. Feeling a real sense of crisis, I decided to talk to my sister while calming her down, as she still wanted to continue.
"Do you want to go to school tomorrow?"
"Yes, I don't know what might happen, but at the very least, I want to graduate high school—or even junior high."
"Are you sure?"
"Yes, if I keep drowning in this, I'll really be ruined. Please."
It's already pretty dangerous as it is, but if this continues, it will truly become irreversible. So, as I held my sister's hand and asked her, she reluctantly agreed.
"...Fine. But there are conditions."
And that's how we arrived at the current situation. When I come home from school, wash my hands, and gargle, I go straight to bed, and things begin. I want to take a bath first to wash off the sweat, but apparently, that's part of the appeal. I'm so embarrassed, but when I see my sister enjoying herself, I can't say anything.
Once we finish that, we take a bath together, which also serves as cleanup, and then the second round starts. We get out of the bath before getting too dizzy, and then we prepare dinner together. That said, by this point, I've used up almost all my energy and end up relying on my sister for everything. After eating the dinner she made, I can finally take a breather. That time of the day is the most peaceful, and also the time I look forward to the most.
After the meal break, we finish brushing our teeth and doing household chores, then get ready for bed. That's when the main event begins. When we get into bed together, my sister doesn't stop until I pass out. The way she says "I love you" during those moments has become addictive, and I'm completely hooked. Every day, I push my physical limits until I lose consciousness, but I'm able to wake up refreshed the next morning, so it hasn't affected my school life yet. Still, every morning when I see the sheets that should be soaked, but are instead completely clean, I can't help but feel a mix of embarrassment and self-pity.
As usual, after coming home today and receiving my sister's affection, I heard the sound of the intercom. I thought she might stop, so I let my guard down, but instead, my sister said, "I'll take my time with you later," and intensified her efforts. Caught off guard, I couldn't resist and quickly reached my limit. I watched her walk away while struggling to catch my breath.
I didn't want to keep Shinobu waiting, so I intended to quickly wash up and get out, but as usual, my sister started touching me, making me involuntarily let out a small "Yelp!" I whispered, "What are you doing? Shinobu is here," protesting quietly, but my sister simply replied, "That's why you need to keep quiet," without stopping. Having no choice, I covered my mouth with my hand to muffle any sounds, though I wasn't sure if it actually worked.
After getting out of the bath, I headed to the living room and sat down facing Shinobu. When I looked at her, I noticed her face was slightly flushed. An awkward atmosphere hung in the air. Hesitantly, Shinobu spoke up.
"I can pretty much guess, but... what's the nature of your relationship now?"
Shinobu asked in a somewhat exasperated tone, leaving me at a loss for words. After what had just happened, I couldn't bring myself to look her in the eye and instead lowered my gaze. My sister, however, answered in my place.