水夏 ~SUIKAおー・157章~

A 'Learning Software' of sorts officially endorsed by the Japanese government aiming to educate people on how to avoid food poisoning, and specifically the 'Escherichia coli O157:H7' bacteria strain, a leading cause of foodborne illness.

Blue Mist

It was released simultaneously with the all ages version of the original Suika and features chibi versions of the game's characters in an ADV/Quiz game consisting of four different chapters, each one with it's own individual story including tasks like finding a way to cure an infection or to master the art of cooking.