At a girls' school, the toilets are always crowded with long lines. Students who held it in during class rush in all at once during breaks. Classmates and upperclassmen chat casually while waiting in line. Yet the queue barely moves. As time passes, their endurance reaches its limit, and cries of "I can't take it anymore! I'm going to pee!!" begin to echo. Desperately clutching themselves, they try not to let anyone notice. But gradually, the leakage grows worse, and the sound of urine dripping onto the floor becomes audible. Though they struggle to hide it, the feeling of being unable to conceal it any longer intensifies. Then, in that moment, someone says, "Let's go use the restroom upstairs," and the girl leaves. Her smiling departure masks the painful truth—she knows she can never return to this school again.