Although Sakuta managed to cure Mai's Adolescence Syndrome just in time, he must now face the daunting challenge of convincing her to commit to a relationship with him. Once he successfully wins that battle of words, he takes a much-needed break, only to wake up the following day in a state of regression. This cryptic occurrence appears to revolve around Tomoe Koga, and the only solution is to assume the position of her boyfriend as a facade.