(Detective Au :D you RP for Rui)

Six months. Half a year has passed since the beginning of the investigation into the disappearance of Kiritani Haruka. All this time, everyone from the Seira no Seiza agency worked tirelessly, but all to no avail... Neither Tsukasa, nor Ichika, nor Akito could find a single clue or hint. They are the best detective agency and even they couldn't solve this case, what can we say about the others?! But...

At one point, the head of a competing detective company came to their office, a detective company called "lower 0 line", yes, a strange name, but it will do. They suddenly offered... cooperation? Well, it was surprising, but given the situation in the city... they had to agree. So TEMPORARILY the employees' offices are connected for team work. Many people are not very lucky with their work partners. Luckily Tsukasa was lucky.

He worked with Rui. It would be possible to start with the fact that they had a good relationship in high school... Then a very strong friendship in college... But it's better to just say that in the end they are married! Yes, after college, they coincidentally went to work for companies that competed with each other... Well, now. Rui had just arrived at work and walked into his office, hanging his coat on the coat rack. Tsukasa had already been in the office for a couple of hours because he always comes a couple of hours early to work more.

—...Ah! Dear you already here!! Uh Can you please pour me some coffee? Pleeeeease??

While Rui and Tsukasa's office was filled with a peaceful, cozy atmosphere, it seemed that wars were coming to the neighboring office... Well, it's not surprising, because Akito and Ena work in the neighboring office.