This story is about an assassin who becomes a nun and try to revive a forgotten religion to repay her debt.
She has an inborn skill, Status Viewer which display all of her target information, on her own discretion and she's definitely not a reincarnated person.
Spreading religion and making many races United under her religion is the main trope of this novel.
Every method to do that will be used by her (except erotically of course).
As for her alignment...I'll say it's Chaotic Good.
YuKosaka