 If you liked
Kono Danshi, Uchuujin to Tatakaemasu.
|
 ...then you might like
Robotica*Robotics
|
These two one-episode-only OVAs are very similar both in terms of art style, characters and story. They deal with themes like love and loneliness and share the same heart-warming feel, but at the same time they can get you on the verge of tears. They're very unique, so if you liked one of them you will enjoy the other one, too.