When the tsundere finally falls asleep in a shirt pocket, marking the first moment of peace for the protagonist.

We both froze.

My fingers trembled as I picked it up.

" refers to a specific adult-oriented visual novel (eroge) tracked on databases like VNDB . Game Overview

Is it annoying? Absolutely. Is it authentic to the tsundere experience? Completely.

One of the most viral features is the "Power Nap" mode. Since a true tsundere childhood friend wakes you up for school, if you put the device to sleep in the middle of a conversation, Celica will be furious when you boot it back up.

The developers have leaned into the premise. The marketing tagline reads: "She’s always been by your side. Now she fits in your backpack."