EASY (IER) KANJI - JLPT 3 KYUU

This kanji is made of 2 parts: onna (woman) [] and city or market [] - The older sister is probably the one who is sent to the market...

1) shi, 2) ane -older sister

お姉さん o nee san - big sister (honorific - changes from 'ane' to 'onee'
姉さん nee san - girl, older girl
姉妹 shi mai - sisters