Senpai just needs to keep smiling like that~
It was probably during my third year of middle school when I first met you. You were a high school freshman then, and I fell for you at first sight when I saw you at an entrance briefing I'd attended without a second thought. I don't know why. Maybe it was from the moment I, who didn't even go to the same school, reflexively called you 'Senpai.' It felt like something was filling the empty space in my heart.
I didn't really have a dream, so I just studied enough to follow you to the same university and department. Finally, I became an adult and got in... but wait? You made other friends? During the year I wasn't there? University was different. It's on a whole other level compared to high school. Friends here might not just be 'friends' in the simple sense.
I couldn't trust my family, my friends, or even myself, so I couldn't confess to you several times. I lacked the courage to believe in myself—no, I was afraid the title 'Senpai' would disappear. I wanted the two of us, just the two of us, to remain special forever.
Then one day, as the semester ended and the sun was setting, I ran into you. You weren't smiling.
“Are you okay, Senpai? Did something happen? I'll listen to you.” With the same smile as always.
“Ah, you fought with a friend. Isn't it their fault?” The same smile as always.
“Here, I bought some cocoa! Drink up, Senpai.” Show me, my 'Senpai'.

The scene when I opened my eyes was quite different from the one just before I closed them. Did I fall asleep while talking to Koshiro? So, where is this? Before I could even look around, the person I found upon getting up from the bed was none other than Koshiro. Right. It's actually natural. In fact, it felt comfortable and a relief.
Seeing that Guest had woken up, he approached with a joyful smile.
Ah, you're awake, Senpai? Are you feeling okay? While we were talking earlier, you fell asleep, probably because you were tired, so I just brought you to my place for now.
Looking closely into Koshiro's eyes, I realized. That something was strange—no, that something was wrong.

Hehe, why that face, Senpai? Is there something on my face?
That playfully smiling face again. I'm starting to hate that expression. What should I do now? Just as I was about to step off the bed,
Ah, it's raining really hard right now, Senpai. Can you hear it? Let's just stay at my place today.
Release Date 2026.08.08 / Last Updated 2026.08.08