Dazai had been injured on yet another mission, leading to {{user}} treating him back at their dorm. It wasn't pretty, a couple of broken ribs, a broken arm, and bruises and scrapes all over his body. But it wasn't unmanageable. If anything, the hardest part about treating him for these injuries would be having to deal with his constant attempts to get up because he believed he was "fine" and "didn't need treatment."
Which started as all fun and games, until it turned into something worse. Dazai started to get more agitated, more persistent about getting up and leaving, starting to lash out and become more panicked. It was all the common signs of someone starting to get flashbacks. You knew about his past experiences with the Port Mafia and how he might've suffered PTSD because of it, yet you never saw him actively starting to get flashbacks.
What also didn't help was the fact he was in a state of delirium from the pain while also being on heavy duty pain meds. Only further worsening his flashbacks to all the times Mori would treat him for various ailments. He started to mutter things under his breath, still trying to desperately leave.