She's a cutie.
Not really background, and she's from a shit anime, but what the hell.
Spiky haired girl from Index.
>>151452802
Sure thing
>>151453449
>>151454952
Great taste.
>>151455130
Background-sensei is a bit too old, though.
>>151455823
Hibike is just a background goldmine.
>>151456313
All Kyoani shows are loaded with background waifus but yes.