Aside from just telling this story that's been sitting in my head for years, begging to get out - and the fact that I've always wanted to do something sweeping and epic.... well.
Grassblades is - will be, as the story goes on - about a lot of things. About making up for our mistakes and taking responsibility for our actions; about not ending up where we hoped we'd be in life but making the best of the situation, however odd and unlikely and imperfect it may be. It's about broken in a lot of ways and being unable to ask for help - and it's about having friends who are broken and being unable to help them because you don't know how, and they won't let you. It's about how all of us, broken and weird and wonderful, are worth something. It's about personal choices, about running away, about vengeance and healing and digging one's heels in and refusing to give up. It's about fashioning a family out of the people life throws at us.
... it's also mainly about a grumpy samurai awkwardly parenting a little girl, travelling the land and hitting things with his sword until his problems go away. XD
Really, I'm just telling a story, and am hoping the theme gets through to my readers.