The "Kase-san and Morning Glories" franchise includes no character named "Sensei" in any official media. Its narrative details main characters Yui Yamada and Tomoka Kase, secondary figures such as Mikawa and Akane Inoue, and minor roles including Hana and Aikawa Mao. Faculty members appear solely through generic references like "Teacher" or "Coach", devoid of names, backstories, or character arcs. No story context designates any individual as "Sensei".