Comprehensive Comic: Two Sisters at the Beginning

What? I've traveled through time! Then there are two younger sisters, and these two younger sisters stay in their rooms all day long. As the elder brother, Li Kong said that for the sake of his sister's health, he must let them come out of the room. First of all, we must first understand what the sisters are doing inside so that we can make countermeasures and then prescribe the right medicine. On this day, Li Kongchong entered his sister's room... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.