A really nice One-Shot by Rumiko Takahashi.
The character design reminds me a lot of Inuyasha since the girl is kinda a Kagome-look-a-like. This is also one of her more serious stories - in this case about romance and time-travel. I definitely will have to watch it again at some point since the time lines/loops have been so well-made that I got confused by it quite a bit.
Nevertheless I enjoyed watching it a lot. I like the "simple" character design, slight humor and the nice music of this OVA.