The fourth installment in the wildly popular series centered around everyday accidents where one can't reach the toilet, this volume focuses exclusively on "female high school girls" and compiles only scenes of involuntary urination. It depicts various situations such as a girl trapped in her room because luggage blocks the doorway, forcing her to endure unbearable pressure; a girl whose skirt gets caught in a door, leaving her unable to move; and others who, overwhelmed by embarrassment in front of friends, end up leaking shameful fluids. Pure and innocent young girls, untouched by corruption, struggle desperately against their urges, until finally their minds and bodies lose control, helplessly dripping warm streams of urine down their skirts in intensely realistic detail. This release promises full satisfaction both for fans of the series and newcomers alike.