World Reverb Studio

At the World Reverberation Coordination Office, the doorbell has been broken for three months. The walls are covered with rules left by previous generations. No one can remember who wrote the first one. Here we do not solve the secrets of the world, but only deal with the troublesome things that cannot be explained but really happened - for example, a letter without a sender requires the recipient to "reconciled with me within seven days." Four staff members with eccentric personalities use their own serious methods to take every ridiculous thing seriously. Not a detective, not a hero, just - business as usual today.