The tag implication #50468 brother_penetrating_sister -> brother_and_sister_(lore) has been rejected.
Reason: Posts showing a brother penetrating his sister will always also show a brother and sister pair. Looking at posts matching brother_penetrating_sister -brother_and_sister they should also have the brother_and_sister tag added imo.
EDIT: The tag implication brother_penetrating_sister -> brother_and_sister (forum #362090) has been rejected by @gattonero2001.
Updated by auto moderator