This game's protagonist is a nun.
A nun is a member of a religious community of women, typically one living under vows of poverty, chastity, and obedience.. She may be a woman who decided to dedicate her life to serving all other living beings, or to be an ascetic who voluntarily chooses to leave mainstream society and live her life in prayer and contemplation in a monastery or convent.
The term "nun" is applicable to Catholics – both eastern and western traditions – Orthodox Christians, Anglicans, Lutherans, Jains, Buddhists, Taoists, and Hindus.