Unbeknownst to crown Prince Lee won and seo yul, GWI has found out that they were planning to end him accidentally but he didn't know what they planned to do. He followed the tail he has and end up meeting his teacher who is also the guidan vampire as the culprit crown Prince Lee won was conspiring with.
Gwi was shocked beyond words as he was so sure he killed the guidan vampire his teacher with his own hand and here he was standing in front of him still breathing life. He confronted him about what happen back and also what he was trying to do with the crown Prince. His teacher ignored his words and tried persuading him to go back through a righteous path and stop living his wayward life.
Gwi became furious because of he felt belittled by a person he has almost killed before. He grabbed his teacher neck strangling him while also he snatched the wooden stake in his teacher hand while also inquiring from him the numbers of vampires he has killed with the stake as a guidan vampire. The guidan vampire kept struggling and suddenly Gwi stabbed him with the wooden stake in his heart and tossed away his body ,turn back and left without looking back. All this was done swiftly in less than two minutes and the place return to calm after he left.