Yep. Okay. Minashiro family crest.

I can't for the life of me find the meaning of "Minashiro", other than two obscure things: White River and Southern Castle. Well, "white" makes sense since... I do believe that "shiro" is "white". I can't find "mina" to mean "river", but it could be another one of those random ways of reading kanji that no one ever uses. So I went with the river idea (Souther Castle on the ocean, KAY?!). Cherry blossom because I'm just so original like that.

Background: Michael's mom name is Minashiro Yuuki. She later adopts the name Villetta because she breaks her tongue every time trying to pronounce it and the English language amuses her. She is the second child (she has an older and a younger brother - Teruhiko and Yet-to-be-named) in a samurai family allied with the Tokugawa/Shogun (...right before the Meiji restoration, too...). Her mom was a ninja. Who killed her dad. But after the youngest son was born. Yep. Her family was basically annihilated in the turmoil, though her older brother did live to see a bit of the post-restoration Japan, thanks to Marian's meddling. This is their crest, that later gains a little octacle (or whatever you want to call it) around the outside, making them a speciful exception that is allowed to bear arms (Michael's Guild status and BS made sure of that), but the family basically dies with Mike's uncle and mother.

Mike is the last living heir to the Minashiro family. He honours this by wearing the crest... Somewhere.