These are just a sampling of some of my favorite Seiya/Usagi fan fics, found on Fanfiction.net!
:star:Heart of Cosmos by !SolarGuardianChick (https://www.deviantart.com/solarguardianchick) - http://www.fanfiction.net/s/3999096/1/
:star:Sailor Moon: Destiny by :iconSailorXStar: - http://www.fanfiction.net/s/4641596/1/
:star:Toasty by :iconSailorXStar: (a short fanfic about the amazing fanart by :iconYoukaiYume: - http://youkaiyume.deviantart.com/art/Seiya-Usagi-Toasty-148253540) http://www.fanfiction.net/s/5622662/1/
:star:Forever Hold Your Peace by Mikami - http://www.fanfiction.net/s/2935853/1/Forever_Hold_Your_Peace
:star:Out of the Abyss by Yra - http://www.fanfiction.net/s/20