In the land of Ren, every youth who reaches the age of 16 and passes a critical test must embark on a journey to fulfill a noble mission—to seek the elusive Spirit Dew.

I am Mizu Ren Nanami... As a native of Ren, my time has come to set forth on a journey to win the hearts of people in distant lands. My destination is the city of Rostania, and the young souls at the academy here are the ones with whom I must forge bonds to obtain the Spirit Dew.

Yet, as I undertake this mission, shadows of secrets from the past emerge, revealing truths I had never known...