Responses
Jin's mom did pushed him but because when Jin was little he and his dad was 'working'. She's not dead but in a coma and then in the finale she's awake.
Now Jin's dad killed himself after confessing the past to Jin and Jin went to jail. Kyun is alive and in the end her and Jin's mom just wait for Jin to be out of jail.
Plot twist: jin's mom was the one who pushed him. The dad killed the mom and every woman who reminds him of her. The dad is twistedly overprotective~~~ dundundun