(read description to understand the au)

it was a normal day in the armed detective agency. Everyone was either working or chatting with each other.

tanizaki asked yosano about the war, everyone knew about yosano and mori so yosano was fine talking about it.

Yosano: "the last I heard, I was replaced with someone but didn't have an ability like me but has a useful ability."

everyone was more interested now

Dazai: "oh? That interesting.."