お, あね, ねえ
The only woman in this city is your older sister. She's the only woman surrounded by a bunch of men, but she's following her dreams in the big city.
Your older sister may have moved to the city, but she kept her pet sheep (し) with her. Now the only woman in the city is your older sister, and the only sheep is her pet.
Currently there are no similar looking kanji which exist in the WaniKani learning system