Puzzle 1 - Shopping List

Right, so. Earlier this week, I was grocery shopping with Mimi and Kotori-chan...

Okay. Popcorn, chips, nachos, that should be enough for the classics. Or was there anything else on the list?

No idea. I got dragged into today's movie night like thirty minutes ago. Besides, wasn't Kotori-chan supposed to have the shopping list?

Aw, don't make that face. You never wanna participate, but then you end up enjoying it.

But yeah, where is Kotori-chan?

Just as Koma mentions her, Kotori appears around the corner, carrying a comically oversized bag of marshmallows that's almost half her size.

Hey, girls, look what I—

No.

Eeeh?

But... look at how big it is!

No, yeah, that's exactly the problem.

Feel free to buy it, but you're gonna have to pay with your own money.

Kotori spends a few seconds pondering, and then, with a resigned expression, throws the bag into the shopping cart anyway.

Anyway, you had the shopping list, right? Was there anything else we need?

Yeah, I have it on my phone, give me a sec.

Kotori fiddles with her phone.

By the way, girls, do you know that feeling when there's something on the tip of your tongue but you just caaan't recall it?

Hm? I guess so. Why?

Kotori holds up her phone with a blank stare on her face.

I might have forgotten my screen lock code.

Seriously?

I just changed it last week. The old code is the only thing popping into my head right now.

Did you make a mnemonic or something?

Nope!

Actually, wait!

Kotori quickly goes through her pockets, and takes out a piece of paper with a victorious smile.

Usa-chan gave me this when I made the new code. Said "you're probably gonna need it".