spoiler
After the ghost wife died, the husband set off and said goodbye to his son. He asked his son whether want to follow him. His son replied " is ok, I am a human and mom would like to think so". The dad said "we are connected and you can find me". After that, the dad looked up the sky and said " please hurry, my wife".
After the dad left, many ghost want to eat the son. The son said, the owner of the house haven left, is just change of owner.
After few years. the wife reincarnated. Snake and ghost mountain approached the mc. During high school, mc can see ghost. At the end, author didnt show mc chose who again. But, our guess is mountain ghost due to his black t-shirt.
Oh gosh I wish snake guy can choose someone that'll make him happy
thumb up if you want the spoiler. i already read till the last chapter :)