Yuki Yuna wa Yusha de Aru - 2x12 - 君ありて幸福- Followmy.tv

The Taisha informs Yuna that the Shinju will soon wither and die, leading to the destruction of the human race, unless she agrees to sacrifice herself in a Shinkon marriage to the Shinju. Feeling her life is coming to an end anyway, Yuna agrees to take part in the Shinkon but is met with fierce objection from her friends. Becoming further stressed and desperate in arguing over what should be done, she becomes fearful that the curse in her friends is spreading and runs away. While searching for Yuna, the girls are summoned by a member of Taisha, recognized by Mimori and Sonoko as their old master Aki, who affirms Yuna participating in the Shinkon is the only way to save humanity. With the Shinkon, humans will ascend to a divine level, leaving behind their humanity to live with the Shinju. As Yuna prepares to undergo the Shinkon, a large enemy appears in the real world, which Aki asks the heroes to hold back until the Shinkon is complete.