Tonight I plan to work overtime to meet the deadline for submitting the report to my boss, but suddenly a storm hit, heavy rain accompanied by thunder and lightning caused the trains to stop operating. I was considering staying here alone tonight when my senior, Nanami, suddenly rushed in, soaking wet. Her thin shirt became so drenched that her bra and body were almost completely visible before my eyes. I handed her a towel to dry herself and learned that she had come back to get her things. Suddenly, thunder cracked loudly, and Nanami-senpai hugged me tightly; she seemed very afraid of the thunder and wanted to hold me for a while until it passed. Looking at her alluring, wet body along with the scent from her skin made me unable to resist touching her all over! Taking advantage of the moment, I was about to go further when she unexpectedly kissed me; it turned out I was not a wolf but a weak little lamb in front of her! Nanami made me have sex all night until morning to serve her sex, almost exhausting all my strength and energy...