Honkai, encountering Thunder Mei at the beginning

Accidentally traveled to the world full of discrimination and malice of the three men.
Fortunately, there is a certain Lu system as a golden finger, as long as you meet a character in the plot, you can draw cards.
Over the wall, and then met Leiden Mei.
"System! Sign in!"
"Ding, congratulations on getting "300 Home Cooking Recipes""
"Eh?!! System! System Dad!!! Now is not the time for breast buds!!!"