Angel

The Angel (天使, Tenshi) or Bird Person (鳥の人, Tori no Hito) or Winged Girl (翼の生えた少女, Tsubasa no Haeta Shōjo) is one of the main characters in On Your Mark.

About
She was rescued by police members Aska and Chage, who encourage her to fly. Most of the time, she is unconscious.

She is a product of a radioactive mutation, caused by scientist of Saint Nova's Church.

Trivia

 * Chage and Aska "failed" for "several times" to save the girl, however it is not clear if these depictions indicate they reincarnated for several times, or following different timelines, or depicting multiverse, or simply showing possible timelines.

Engel Angel On Your Mark