He grew up in the city and looks mature, but he lives with his younger cousin for a tsundere life for the holidays

I have a younger cousin. He grew up in the city, is mature and cheeky. During the long holiday, my parents ended up traveling alone, and we decided to take care of them at our home in the countryside, where there was nothing to be done. What I say to me is tough, but I've been doing naughty things... This is the flip side of my love! ? I'm at the mercy of a cheeky but unhate little devil! It might not be a bad life if you live together like this.