Following the body's arousal, AA2153 is summoned to the male reproductive organ's Corpora-Cavernosa to produce an erection. He is bullied by veteran Erythrocytes cutting in line and saved by U-1196. Along with two other Neutrophils they go to the testes, depicted as a nursery for spermatogonia where Sertoli cells take care of them. Later, accumulated stress impairs the erection but there is an intake of Sildenafil (Viagra). Ejaculaton is achieved but intercourse allowed an infection by Gonococci.