Koori no Uroko

The main character, Mao, has trouble reading the mood and building good relationships with others. He has stopped going to school and has been holed up at home, spending his days drawing. One day, he goes to a ballet studio in Sapporo to help out at his family's restaurant. There, he witnesses the performance of "one of the country's leading professional ballet dancers".

"The more cruel, the more beautiful life is." His heart is drawn into the cruel yet brilliant world of ballet.

(Source: Kurage Bunch, translated)