In our family, having an extra person suddenly appear seems to have become quite a commonplace occurrence. As Lin Xue often jokes, we're used to a certain unreliable fellow bringing home a new sister or daughter every now and then. With this, both Sayaka and Mercury Lamp feel quite stressed. However, this time, the new member of the family seems to carry quite a significant weight; even the family who has grown accustomed to such things finds Xiao Xue quite incredible.
This is not only because of Xiao Xue's magical time-traveling origins but more importantly, her unique identity: she's the only one among the daughters at home who has a blood relationship with the guardians.
This leads to a particularly cheeky little girl, like Lilina, making fun of the awkward situation for Lin Xue and me.