
Matsunaga Yoshihiro has visited The Dragonfly Coast, a remote sea beach, seeking solitude, but met a girl, a kindred soul of him, instead. Their summer ended in the twinkling of an eye and the girl has dissapeared. "I will wait for you by the sea", were her last words. 7 years later Yoshihiro being a tour conductor is accompanying a group of students and teachers on their 'Summer School', half educational half recreational trip to The Dragonfly Coast. Cherishing a vague hope he steps on that land again, and the ever blue sea is awaiting him.
Refrain Blue is a Japanese visual novel of 513,494 characters, with 13,027 unique words and 1,960 different kanji. Its difficulty rating on Jiten is average, 2.1 out of 5. The full vocabulary list ranks all 13,027 words by how often they appear, and you can study them on Jiten or download them as an Anki deck.
Here are some of the words that appear most often in this media, as well as a sample of its rarer vocabulary.