My Dear Marie

ぼくのマリー

Also known as Metal Angel Marie, Boku no Marie

Hiroshi Karigari is a college student who has secretly built an android modeled after a tennis club member he is in love with named Marie. Introduced as Hiroshi's sister, Marie Karigari is a sentient robot who feels a deep affection for her creator. Both have a hard time trying to conceal her true identity in order to keep their current peaceful lifestyle.