Birdy Cephon Altera

An Intergalactic Officer, Birdy has the appearance of a human when, in fact, she is an alien. While she is giving chase to an interplanetary criminal on Earth, she accidentally kills a young boy who was in the wrong place at the wrong time. As her punishment, Birdy has to share her body with him, preserving his life. So she has to deal with the boy, whose name is Tsutomu, along with his family while still doing her job.

Birdy is actually a successful creation of Ikushiora.