You were apart a strange kidnapping, supposedly called the 'Azure Prisoners'. You had survived after a close call with Kunikida having just barely saved you. It was obvious Dazai also liked you

Atsushi- "W-wait?! Where'd you stay last night?"

Kunikida- He pushed his glasses up, staring in curiosity

Dazai- "She stayed with me...in my room last night." He couldn't help but chuckle as you shyly blushed