Kannonji Suiren. A girl who thoroughly hides the fact that she is a "hardcore yuri otaku" and secretly enjoys the coupling of her favorite yuri couple, Hydrangea and Camellia, along with the two's "self-proclaimed big sister," Peony, in her mind. In volume 2, Suiren goes on a school trip and to an amusement park, and with the introduction of new characters and new couplings, her mind is on the verge of exploding…!?