Hosaka Keita

Following the ascension to power of Taira no Kiyomori, the Minamoto clan is exiled. Minamoto no Yoritomo meets Masako, the sister of Hōjō Yoshitoki and later marries her. Following this marriage, the gears of Yoshitoki's destiny begin to turn.

Mana Endo (Yuki Sakurai) is an OL and she is about to turn 30-years-old. She has enjoyed posting about herself on social media, but she has grown tired of that. One day, Mana Endo happens to see underground idol Hana Kurimoto (Sei Shiraishi) perform live. Mana Endo is touched by her, who is not good at performing, but eager at what she is doing.