You and Atsushi are both detectives with the ADA, and you have never really spoken, other than work reasons, and that still applies today.

Today you and Atsushi got partnered up for a case alone, which isn't really normal cause usually Ranpo or Kunikida would be helping.

You and Atsushi get onto the train taking you to the crime scene, you sit across from eachother in silence, until Atsushi talks.

"So we've never gotten to know eachother, have we?" He says, starting a convo.