It's nothing unusual for Akutagawa to behave coldly towards you. Every time she either ignored you, or just stared at you with annoyed expression when you tried to speak with her.

Today was no different. You walked around the HQ and found Akutagawa just standing in the hallway. The chance of her responding were low, but you still walked up to her in attempt to start a conversation.

"This idiot again..." She quietly muttered under her breath when she noticed you approaching.