 If you liked
Kuttsukiboshi
|
 ...then you might like
Fragtime
|
Both are Shoujo Ai
Both have an element of sci-fi / supernatural
Fragtime is tamer than Kuttsukiboshi, but the latter isn't hentai.
If you like short OVA / films with yuri and super powers (for lack of a better term) I would recommend either of them.