The incident known as "A2327 Sana Nakajima Under Water Rape Hell 46" refers to a harrowing event that Sana faced during one of her expeditions. On a research vessel, stationed in the middle of the Pacific, Sana and her team were exploring an underwater cave system at a depth of 46 meters. The dive was routine until Sana became separated from her group in the labyrinthine tunnels.