You guys, I am many years late to this party but THERE IS A YURA OPTIONAL ROUTE (2 TO BE EXACT) AND a RIN backstory and a high school setting story in the fan VN nagomibako made in 2007, 2 years after the release of this one (2005). There is a translated version, and it does have a mini game. There is one canon and a non-canon ending for Yura which then the canon ending precedes to the KNS and further stories that take place afterwards in the same universe. Oh, and did I forget to mention there are mini games in nagomibako!
It's a fan disc to address the fan requests in cartagra.
