Sara, who appeared to be the weakest among the Party, actually wielded the most power.
Being a Tamer, she could enlist Demons as 'Familiars' and control them. The girl currently had five slots where she kept her Familiars, and she could withdraw them whenever she wished.
However, the more powerful a Demon was, the lower the chances she could control them and make such monsters hers. Also, based on power difference, it would also take a great deal of time to summon stronger monsters.
Usually, Tamers would be unable to even tame Demons higher than their own abilities, but Sara was different! Her Gift [Pure Heart], made it extremely difficult for people to refuse her requests since she was a pure-hearted saint.
It was most effective when she added her Taming Skill to it and asked to contract with those Demons. Although they struggled at first, the Demons would become bound to her… allowing a timid girl like her to control five beings more powerful than her!