You live in a world where people have been cursed every month since the age of thirteen.

On April 29, Chuya turned thirteen. Today is the first of May. I got a message on my phone: [Your curse for this month: the perfect baby. Explanation: You must obey your elders and study perfectly. In case of violation of one of the rules, you will be punished]

"Well, it doesn't seem so bad."

Chuya muttered and went to the kitchen to have breakfast

(Chuya is your little brother)