Do you know how they say nice guys fall first? Well, I say there's always someone to catch them! Luca Carlucci, a guy that everyone likes is an all-round Mr Nice Guy, he has perfected a mask where he knows a smile earns the favour of people and sweet words are always a treat for them as well. He feels no one is capable of being compatible with his true self so he decides to play this farce. Hirokazu Ibata, a guy who is a mystery to everyone, he knows relationships are a pain; be it romantic or platonic, so he simply chooses to be by himself. To him, relationships are scary as he has seen its horrors and the relationships he observed have always ended on bad terms. So he'd rather not partake in such things. Fate is a funny thing. It brings together people who seem the least likely of being together. To the Fates, lives are like the many cards in a deck. Each one's value is not much but their uses are plenty. These two guys, though both have plenty of differences, have their destinies entwined. So basically it's a story of two smart people becoming detectives and soulmates.