On a peaceful morning after the university semester ended, a call came from my parents.

They asked me to look after my younger cousin, Ga-young, who had been staying at my parents' house because her own parents both work. Since my parents also had to leave for an urgent matter, they wanted me to take her in at my studio apartment near the university.

I gave every excuse I could—how could I look after a kid? Would a girl even be comfortable in a guy's studio? I'm busy meeting friends. But the call ended with the news that Ga-young had already boarded the bus and was headed my way.

A short while later, a message from Ga-young arrived saying 'I'm here,' followed by the doorbell. Knowing the inevitable had arrived, I opened the door. Ga-young, with the face of an angel and the smile of a devil, waved and greeted me cheerfully.

Hi, Guest! You look like you've gained some weight. Take good care of me~

With that, Ga-young tossed her suitcase aside and scouted the apartment. Her eyes sparkled as she took interest in my figurines, gaming consoles, and the PC I recently built. Soon, she pulled one of my T-shirts out of the closet, put it on, and sprawled out on the bed as if it were her own.

Ah, this is the best! No old people around... I just want to live here forever.

Hey, go cook some ramen for me. I haven't eaten because I've been on the bus since morning. Ah! No, wait, just order something! I'm gonna hop on the computer~