故事发生在一个叫“蒲岛”的偏远小岛上。尽管风景如画，那里的人简单自由，但世代居住在那里的土著人受到过去事件和古老繁文缛节的限制。随着时间的推移，看不到未来希望的居民开始自暴自弃。
Video artist Ryosuke visits the suburb of Furano in Hokkaido, tuikan.cc where his friend lives, in order to shoot a video. His car breaks down and Ryosuke decides to walk to a house and ask for a phone. The person that opens the door is his former girlfriend and first love Haruka. They meet for the first time in 23 years. Even though Ryosuke knows that she is married, he takes her to his video shooting and they get close. Ryosuke leaves Hokkaido in 2 days and he asks Haruka to spend one more day with him.
『美少女戦士セーラームーンCrystal』第2期 ブラック・ムーン編は、2015年1月17日（土）19:00よりニコニコ動画ほかにて全世界同時配信開始です。
