Sukki and Nen were introduced 10 years ago by the latters sister, and have been together ever since. The pair make love at least once a day, and are quite sexually adventurous and exhibitionist, having had sex in spas, changing rooms, bathrooms, and beside many different bodies of water. 

The couple have both explored their bisexual sides and love having threesomes and foursomes, although they almost enjoy the flirting and build up of excitement almost more than the sex itself. Nen in particular enjoys watching Sukki with other people, and really loves seeing her enjoying herself.