Setsuna

Setsuna is a female Demi-human slave that Keyaru bought and recruited into his party.

After she and other members of her tribe were taken as slaves and endured harsh abuse, Setsuna has developed a strong hatred towards humans and takes great pleasure in killing Jioral Kingdom knights. Despite this, she is not willing to extend her vengeance towards innocent people.

Setsuna is first encountered by Keyaru in the custody of a slave trader. Her resentful expression is noticed by Keyaru, who promises Setsuna assistance with her revenge before bringing her back to an inn. She attempts to leave by force out of an obligation to help her tribe, but Keyaru, who had viewed her memories while she was asleep, reminds her of her current powerlessness. This convinces Setsuna to become Keyaru's slave, and the two have sex to increase her level cap.

Power and Abilities

Strength: After having her level cap raised, Setsuna is able to overpower the average human.
Agility: She is very agile, as shown when she easily outmaneuvers multiple guards, and performs multiple flips. She can also fall from a great height without being injured.
Ice Claws: Setsuna's primary weapon. By enveloping her hands with ice, the result is a pair of sharp claws portruding from her fingers.

(Source: Kaifuku Jutsushi no Yarinaoshi Wiki)