What's under Kamiyama-san's paper bag?

Chapter 11: ch. 11 - Dread and Aversion - One You Shouldn't Look at.
Chapter 10: Rally - Here it comes! The Menacing Fusion of Two Bodies!
Chapter 12: Repay Kindness - The Feelings She Can't Take Off
Chapter 10: Rally - Here it comes! The Menacing Fusion of Two Bodies!
Chapter 12: Repay Kindness - The Feelings She Can't Take Off
On his very first day of starting high school, Namito Kominato's homeroom teacher has him sit behind a strange girl who wears a paper bag over her head and is always soaking wet with sweat. Her name is Samidare Kamiyama, a extremely shy girl with severe social anxiety. Ultimately, she meets Hinata Arai (the student council president who's kind and helpful, but alarmingly obsessed with her uniform) and Harusame Amano (a girl who only speaks at the magical girl panels at anime conventions). These three unfortunate, but beautiful girls form a "conversation club", opening the curtain on this somewhat pitiful and comedic tale of adolescent romance!