Board Thread:General Discussion/@comment-11469381-20150831022901/@comment-995426-20150923163303

Though I don't know the character dynamic first-hand too well, I can sort of see why they're popular to ship. There are ways they apparently complement: They are both experts at katana, and they both have a strong code of honor, and they both have a traditional Japanese swag to them. And there are ways they contrast: Turtle and rabbit is a lot like The Tortoise and the Hare, making them visually appear to fit like a yin yang. That, and the art can be pretty sweet. Here are some (less racy) examples from deviantART:

http://datingwally.deviantart.com/art/Commission04-Leo-x-Usagi-142025302 http://neos-mies.deviantart.com/art/Usagi-x-Leo-SS-2013-arbrenoir-420220559 http://mukuto.deviantart.com/art/Yaoi-Usagi-x-Leo-04-422910912 http://beevirus.deviantart.com/art/Not-another-Leo-461601018 http://ashitarimai.deviantart.com/art/Firelight-386018173

In a random art search of "Leo" and "Usagi", anywhere from one-third to half of the submissions are shipping. So...yeah.