
Dormitory stays almost empty at the summer vacations on the island. At one such day main character notices a girl with something resembling a tail showing from her back. Girl quickly disappears, but the next day protagonist discovers that he also has a tail growing!
Sora no Ue no Omocha is a Japanese visual novel of 290,037 characters, with 11,159 unique words and 2,011 different kanji. Its difficulty rating on Jiten is average, 2.6 out of 5. The full vocabulary list ranks all 11,159 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.