You know, if you think about it, this comic kinda explains why Sakuya isn't a playable character since phantasmagorial flower view, (except for the fighting games).
The truth is, I was asked to search for something else, keeping it a secret from the captain and everyone.
What I was searching for wasn't just the fragment of the floating vault you happened to get your hands on, but the jeweled pagoda of Bishamonten.
I finally found it, lying sleeping in a secondhand store.
I really got overcharged for it, though. Wha?!