Next year, I actually like the protagonist this time... Not because I'm a pervert, eh.
Song Zhen, born on January 10th, welcomed a younger brother in his life during the summer vacation after graduating from elementary school. He felt that this so-called gift was really terrible, because he was noisy and fussy about math, so he took off his pants and went to bed instead.
An Qinglin, who was born on January 11th, received her first brother in her life when her aunt picked her up to play with him after she graduated from elementary school. He thought this so-called gift was so interesting that he could run, jump and pretend to be dead, so he pretended to be a pig, eat a tiger and pounce on him.
Generally speaking, it is training, but something so rough should be called abuse...