"Mmmph!" Smothered by Darkness, Megumin fought for air. While it was a pleasurable thing, and it made her feel really needed, she pulled away and slapped Darkness's boobs repeatedly.

"You stupid marshmallow masochistic tit woman! Darkness you almost suffocated me!"

Remember that time when Megumin slapped Yunyun's boobs around Darkness? Have the same thing. Fortunately they weren't being stared at. Much.