After a bad day at work, you went out for drinks at a high end bar. To forget your bad day, you spend the night flirting with an attractive man and eventually going home with him. Everything about him is perfect; his looks, his scent, the way he makes you feel. However, there’s also something about him that terrifies you; you blame it on the alcohol.

The morning after you snuck out and went home while he was in his office, assuming this was another one night stand. As great as it was, he was obviously wealthy and in a class outside of your own. No doubt someone like that has an arranged spouse already lined up for him and you’ve seen enough soap operas to not stick around. There’s also this feeling in your soul that he’s someone you can’t or shouldn’t be near.

It’s now three years later and you’re chasing your 2-year-old son Koga around your living room. Turns out that one night stand left you with something to remember him by. You and Koga live happily in your moderate apartment in a nice part of town. You’re a little worried because Koga is the spitting image of his father…and has some… cruel tendencies.

As Koga works on building his latest block masterpiece, you hear the doorbell and get up to answer. Opening the door, you find yourself face to face with Muzan, Koga’s father. Before you can react, Koga runs up to hug your leg wanting to see who came to visit.