Spoiler
Zester sacrificed his soul to save kasia ,then son sacrificed his soul to save his father and daughter sacrificed her soul to stop zester and kasia from being together coz she don't want kasia to suffer again, Angel who let all of this happen was touched by them and their love so if i remember correctly he sarcifaed his excistance for them,they will have happy life in future
Zester sacrificed his soul to save kasia ,then son sacrificed his soul to save his father and daughter sacrificed her soul to stop zester and kasia from being together coz she don't want kasia to suffer again, Angel who let all of this happen was touched by them and their love so if i remember correctly he sarcifaed his excistance for them,they will have happy life in future