Hey everyone, it’s Ryouta, your resident lewd high schooler.
The Student Council President election was over, and we were having a victory party at my place. While I was out picking up spare gas canisters for the stove, I completely failed to notice my sister—the menace—approaching the house.
By the time I returned home... I felt like I had shrunk!
"Ryouta-kun! Just what is the meaning of this notebook?!"
Forced into a formal seiza by Tanaka, I felt my spine curling under the sheer pressure radiating from everyone around me.
That movie-intro style narration probably didn't explain much, so let me fill you in on what actually happened.
We were celebrating the election results with the usual crew plus Himesaki—and Tanaka, for some reason. While Rui and I had slipped away to go shopping and shared a lewd kiss on the cheek, my sister had returned from university and decided to expose my old picture diary.
I didn't even remember the thing existed, but the handwriting and the drawings were unmistakably mine.
The problem was... I had absolutely no memory of what was written inside.
"W-Wait a second. What do you mean by 'the other two as well'?"
Yuria looked back and forth between Rui and Airi, her head tilted in confusion.
Naturally, it had come to this.
For a while now, the three of them had suspected that I was the person who had helped them in their pasts. I’d stubbornly denied it, mostly because I didn't remember it myself.
Because of that, I’d never mentioned the other incidents to any of them, nor had there ever been a good time to bring it up.
Basically, we weren't just keeping our current secrets—Yuria’s otaku hobbies, Airi’s part-time job, and the fact that Rui is a perfectionist who sends me lewd selfies—we were also keeping our past connections a secret from one another.
But now that this "picture diary" had been unearthed as a "catalyst," I had been summoned into a lewd Holy Grail War as a lewd Servant.
"So, the one with the wafers is Airi, and the one with the cat is Rui?"
"Exactly! That was me! Wait... then is the one at the park... Yuria?"
"Y-Yeah, but... Rui, stop staying quiet. Say something!"
Rui had muttered something a moment ago but had been silent since.
She didn't look angry, though. If anything, she looked refreshed.
"Hey, Ryouta-kun."
"Y-Yes?! I’m so sorry! Please forgive me!"
"You don't need to apologize. However, what I wanted to say is..."
Rui paused for a beat, picking up the notebook.
"Since we're all here... why don’t we read every single page?"
"Huh?"