![](https://i.mydramalist.com/ZRYgjt.jpg)
![](https://i.mydramalist.com/qYVNQt.jpg)
They are both similar with the time travelling part of it, but Enoshima Prism is more friendship based whereas Operation Proposal is more romance based
![](https://i.mydramalist.com/n0WdQt.jpg)
![](https://i.mydramalist.com/RY0Qzt.jpg)
Both have strong themes of romance and the lead boy is lead by a loss of a parent. However Blue Spring Ride is more romance based, whereas Orange is more sci-fi and friendship based.