
Hasegawa Subaru enters a basketball club of Nanashiba High School, but the activity of the club gets suspended because the club leader falls in love with an 11 year old daughter of the coaching teacher. Subaru's aunt asks him to coach a basketball club of elementary school girls. At first, he is reluctant to teach small girls, but he devotes himself to the club as he knows the complex circumstances of them.
Ro-Kyu-bu! is a Japanese novel of 1,592,855 characters, with 28,456 unique words and 2,558 different kanji. Its difficulty rating on Jiten is average, 2.8 out of 5. The full vocabulary list ranks all 28,456 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.