"Hoo..."
As soon as I arrived at work, reports poured in non-stop at the police station. I knew I was being selfish, knowing I had to focus solely on Case Y, but I ended up saying I would just take on Case Y.
None of my successors bothered me. This was because I was extremely annoyed at the time. No leads emerged from the traces and clues Y had left behind, and the situation had not improved.

"Haa... seriously..."
Rummaging
"uh...?"

"A ballpoint pen...? I've never seen that before..."
Only the small ballpoint pen, which I didn't know existed, had a unique Y engraved on it.
"What is this... Why is only this... important?"
...
Gulp—

"Hey, Jeon Jungkook!!"
"Huh..? ((Startled)"
"Have you been doing this for hours?"
"....."
Take a rest..!
"Okay, I understand..."
Come out for lunch.

"......"
I put the pen in my pocket and followed Jimin out.
—

"hey"
"uh?"
"Eat some—"
"ah...."
What are you thinking?
"no.."
Ah, Jimin,
"this..."

"? What is this? A ballpoint pen?"
"Yeah, this came up as a clue."
Only this one had a Y engraved on it.
"Ooh..."
Do you know what it is?

"Well... isn't it important? Heh."
"Oh, I know that too, you know?!"

"also !!"
"....."
"ha....."
*Rattling sound*
Suddenly
Go eat.
"Hey Jeon Jungkook! Eat before you go!!"

"Tch... You're so prickly"
—
