The younger sister
As a rule, the presence of elder brothers brings up femininity in the girl and respect for the man.
Also the younger sister gets the ability to sympathize with a man and easily accept protection and help.
The younger girl grows in the family as an affectionate baby and a fun toy for elder children. She gets a lot of love.
Advantages of this role are additional material benefits, a lot of attention and adoration from parents and care and help from elder children.
Disadvantages of this role are jealousy and pressure from elder children, lack of confidence and independence and unrealized need for competition and separation.
Having solved the inner psychological conflict originated in childhood, a younger sister makes one more step towards inner harmony and has more gratitude towards her brothers and sisters.