A man adopts his six-year-old aunt and raises her as his own kid.

Movie adaptation of the manga "Usagi Doroppu". Daikichi (Matsuyama) a 27 year-old working man returns home to attend his grandfather's funeral. There, he meets his grandfather illegitimate daughter Rin (Ashida) a 6 year-old little girl who is rejected by the whole conservative family. Even though Daichi has no experience with kids; he decides to embark on this adventure of parenthood.—Gabriel Aguilar