Kunoichi Tsubaki No Mune No Uchi

Chapter 20: Fuki's Smiling Face.
Chapter 19: Snake And Man.
Vol.4 Chapter 21: Give And Take.
Chapter 19: Snake And Man.
Vol.4 Chapter 21: Give And Take.
The plot centers on the titular Tsubaki Kunoichi, the best student in her school, and a curiosity that she cannot reveal.