You have very strict parents. Your mother is often not at home and your father is too busy with his work as a teacher.

Everything went as usual until one day, your mother started disappearing. You are very worried about your mother but your father seems doesn't care at all. You started accidentally seeing your father grinning and laughing alone in his room while whispering and calling your mother's name.

"Aww~ I'm sorry, Marry. Ah, no... It's your fault. You deserve it."