When I had asked my overly caring senpai to help with my overtime work, a sudden heavy rain prevented me from going home, so I ended up at senpai's place! With senpai's soaked breasts right in front of me, I reached my limit of restraint and squeezed them tightly! The more I squeezed senpai's completely soaked breasts, the wetter senpai's lower area became, and my rational brakes failed. In front of senpai, who was drenched from head to toe, I couldn't stop myself and continued to thrust, further wetting senpai's soaked J-cup breasts with my saliva...