Hei no Naka no Biyoshitsu

Inside a women's prison, there is a beauty salon where inmate Haru Komatsubara cuts the hair of ordinary people. Haru Komatsubara, who committed a serous crime, is the only hairdresser at the beauty salon. Her customers, having their own circumstances, visit the salon to have their hair done. Gentle and quiet, Haru Komatsubara carefully cuts their hair and listens to their thoughts as if she is emphasizing with them. Haru Komatsubara keeps asking herself whether she can atone for her crime if she finishes her prison term. One day, her older sister Natsu Komatsubara visits the beauty salon inside the women's prison.

(Source: AsianWiki)

~~ Adapted from the novel "Hei no Naka no Biyoshitsu" (塀の中の美容室) by Sakurai Mina (桜井美奈).