I could have thought the same, you know. Well, I followed a few of the creatures here because I thought it would lead me to a few more with nice eyes but I was brought here? [ Of course, there has to be a reason why he was sent here? Maybe a sign from Okita-kun up ab.. wait.. Yamato, he's alive. He's fine! ]

If there's a lock it could be, but it might have something mysterious in it as well. There's a lot of different things here so maybe there's something inside that could help?

[ Maybe there's a reason why they left it behind? They'll never know if they don't look inside. ]

A map? Maybe?