My wife's younger sister, Shirone-chan, has returned to my parents-in-law's house after I married into the family. She gave birth at her hometown. Recently, I've been taking care of Shirone-chan after she gave birth, along with my wife and parents-in-law. Shirone-chan seems to be struggling with raising her first child. One day, while I was talking to Shirone-chan, her breast milk started to leak out and her chest became slightly wet. She went back to her room to change her clothes with a shy look on her face, and for some reason, the image stuck in my mind.