kunoichi tsubaki no mune no uchi
An ongoing manga series written by Yamamoto Souichirou. It began publishing in Gessan in January 2018. The plot centers on the titular Tsubaki Kunoichi, the best student in her school, and a curiosity that she cannot reveal. There is an anime adaptation produced by Cloverworks airing Spring 2022.
English Title: In the Heart of Kunoichi Tsubaki