Woo! Finally finished reading, and that was a very well-crafted story. I enjoyed reading from the different perspectives, as it made the story feel fuller as it went along. There were a couple typos and some grammar things that bugged me, but there weren't any serious playthrough problems that I encountered.
Rygel's story was the hardest for me to get into. I think one problem was just the overwhelming amount of "ninja-ness" that was going on. Always mentioning "ninja grappling hooks" or "ninja training" kinda felt a little out of place. I think they could have been great warriors without you having to explicitly say that they were ninjas. I eventually got used to it, though, and when I finally got to his backstory the pace was a lot smoother for me.
Risa's was good, and especially emotional at the end. I always appreciate long-lost sibling stories. She mentioned having heavy ninja armor on, but later on also have a short skirt. The short skirt I see, but she doesn't appear to be wearing heaving armor. That confused me a little bit, but it's only a nitpick.
Kira's was probably the bumpiest for me due to the two insert stories. I know you wanted to give him some time without giving away too much of his past, but I honestly felt the two sidestories were close to unnecessary. They were definitely good, and I think they'd be good stories on their own. They just didn't feel like they quite fit in with the rest.
Silva's was a great conclusion to the story, and I'm a bit sad that the siblings didn't get more time (like I said, I'm a sucker for siblings). Being able to read his emotions, story, and his motives was really interesting, and I enjoyed being able to see inside his mind.
Overall, it was a very well done story. I'm certainly not regretting playing this, and the format in which you presented it was excellent. I'm curious to know more about the Silver Crescent, and I'd definitely be interested to know what happens to Risa after she loses her memory again. Thank you for crafting such a great tale. ^-^