Yusuke tells his girlfriend Noa that he is going to a chiropractic clinic for his stiff shoulders, and she tags along out of curiosity. The practitioner claims Noa may be worse off because women with very large breasts often develop serious shoulder problems without noticing, so she agrees to treatment too. Separated by only a curtain, Yusuke suddenly hears Noa erupt into strange, ecstatic moans. What kind of treatment is she receiving on the other side?