I just finished 'The Swordswoman's Revenge Story After Rebirth' last night, and that ending hit hard. The protagonist finally corners the emperor who betrayed her in their past life, but instead of just killing him, she exposes all his crimes to the entire court. The way she uses his own political schemes against him is pure genius - she turns his noble allies into witnesses against him. In the final duel, she doesn't even use her sword at first; she defeats him with the martial arts style he taught her in their previous life, which is such poetic justice. When she does strike the killing blow, it's not with rage but cold precision. The last scene shows her founding a new martial arts school, training orphans to break the cycle of revenge that consumed her.