Guinaifen, a 4-star character introduced in the Honkai: Star Rail 1.4 update, plays a support role with a focus on applying the Burn debuff to increase the team's damage-over-time (DoT) potential, similar to Hook. As a Nihility character, her optimal light cones are in line with characters like Kafka and Sampo, reflecting her DoT utility. Nevertheless, when she applies DoT, her overall damage through her kit is also increased.