The Blue Jewels Caper

While men sometimes experience a particular type of acute pain in their “je n’ais ce quois” region (polite society speak for “groin”), often after suffering a localized application of force during a sporting competition, alternative pathology can also cause significant distress. John was married to Mary, a neonatologist, who after streaming The Crown desired the same ring that Prince Charles gave to Princess Di, a Blue Sapphire.  As it happened, John returned home after his weekly rugby game and after a beer or two, began to experience discomfort in what he described as his “crotch”. Mary inquired if he had been injured during the match (Mary had been on call and missed the game), and John emphatically replied, “no”, but that he had had several long runs with the ball. That evening, with the pain continuing to increase, Mary asked John if he had suffered similar pain in the past? He responded he remembered a couple of incidents in high school, but not as severe, nor as long. Mary ultimately informed John she was taking him to the ED where he was diagnosed with testicular torsion. John was taken to surgery where his torsion was relieved and they lived happily ever after.  Can you identify the nerve at the indicated location responsible for part of the pain?

Question: Identify the nerve found at the indicated location?

Postscript: Yes, Mary bought herself that Blue Sapphire for alleviating the pain to the family jewels.