Born in the Apocalypse, I Adopted a Yandere Little Sister

Author, I suggest you exaggerate the plot of meeting Xiaoman. For example, they met when they were very young, and then start writing the subsequent plot from a certain moment. This feels better. Otherwise, if the two of them met in such a short time and became so intimate, it would seem a little abrupt and a bit inexplicable 🤔 🤔. Of course, I am just suggesting