Himeko saves a first-year student, Jin, from some punks, and he falls head over heels for her. In order to get him to stop hounding her, Himeko tells Jin that she's already got a boyfriend... Bossun! Now all she has to do is prove it to him...
Why? You gotta have Pockin 
for a long train ride!
Porque siempre hay que tenerlas 
cuando vas de excursión.
¿Que para qué? Tienes que llevar Pockin 
cuando tienes un viaje largo en tren.
Por quê? 
Uma viagem longa de trem exige Pockin!