The Other Side of the Horizon S01 E15 Episode 15

When KWAN's teacher learns that KWAN has saved SHEK, she angrily intends to kill KWAN. Yet SHEK has successfully achieved the Magic Cold Consummate and kills KWAN's teacher. Seeing that her own teacher is dead, KWAN kills herself. Failing to save KWAN, SHEK is greatly disheartened where he goes about killing innocent people.