Senryu Girl.

At first glance Yukishiro Nanako seems like a normal high school girl, but she has a notable eccentricity: instead of speaking, she communicates only through written senryu poetry! This means she expresses herself only in 5-7-5 syllables. To most this might seem like an inconvenience, but for Nanako and her ex-delinquent bestie, Busujima Eiji, it adds to the experience of their high school lives as they run the Literature Club.