Hinako, dressed in transparent rubber, and her sub, dressed in a black catsuit with dick sheath, engage in some mutual breath control. They both put on a maks, connecting them to a rubber breath bag and begin to have sex. The only air they can take in is the breath they each expell, making breathing very hard, very quick. Pushing themselves to the limit, the arousal they feel from their sensual rubber sex is magnified, making them cum almost immediately.