Sonnet of the Island's Dead Castle

So, as part of an English assignment at school, I had to write some poems, which the teacher said could be about anything as long as it's school appropriate. So I decided to write a poem about Osohe Castle, and I attempted a Shakespearean sonnet with this one. It's a bit subtle that it's about Osohe Castle, but that's mainly because I did this as part of a school assignment and I don't think many people at school would appreciate a totally blatant Mother 3 poem.