![](https://i.mydramalist.com/x1JYw_4t.jpg)
![](https://i.mydramalist.com/7nKBDt.jpg)
In both dramas there are time travel to be able to save and win the first love.
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![](https://i.mydramalist.com/x1JYw_4t.jpg)
![](https://i.mydramalist.com/qYVNQt.jpg)
In both dramas you travel to the past through photographs in order to conquer your first love........
![](https://i.mydramalist.com/x1JYw_4t.jpg)
![](https://i.mydramalist.com/zBK5YW_4t.jpg)
In both dramas you travel to the past through photographs in order to conquer your first love.......
![](https://i.mydramalist.com/x1JYw_4t.jpg)
![](https://i.mydramalist.com/826d2t.jpg)
In both dramas you travel 10 years into the past to meet your first love again...........................................
![](https://i.mydramalist.com/x1JYw_4t.jpg)
![](https://i.mydramalist.com/KpPWJt.jpg)
In both dramas there is time travel: in Blue Birthday by burning a photo, in Nine by burning a stick of joss.
![](https://i.mydramalist.com/k5Yjg_4t.jpg)
![](https://i.mydramalist.com/73gPNt.jpg)
Both stories are about two boys who write songs and are helped by the female protagonist.
![](https://i.mydramalist.com/k5Yjg_4t.jpg)
![](https://i.mydramalist.com/zBLwzt.jpg)
Both stories talk about two bands of young boys who want to make their debut as musicians.
![](https://i.mydramalist.com/BQrY7_4t.jpg)
![](https://i.mydramalist.com/ERy35_4t.jpg)
In both dramas the protagonists have been friends since high school. They have feelings for each other but their timing is always bad.
![](https://i.mydramalist.com/BQrY7_4t.jpg)
![](https://i.mydramalist.com/13Np3t.jpg)
In both dramas the protagonists have been friends since high school. They have feelings for each other but their timing is always bad.
![](https://i.mydramalist.com/kAAVVr_4t.jpg)
![](https://i.mydramalist.com/xLJ0r_4t.jpg)
Both female protagonists are shy and lonely at first, but manage to make friends with the help of the male protagonists.
![](https://i.mydramalist.com/ryBpy_4t.jpg)
![](https://i.mydramalist.com/ey8Wpt.jpg)
In both dramas, the protagonists think they are half brothers and one of them interrupts their story.
![](https://i.mydramalist.com/ryBpy_4t.jpg)
![](https://i.mydramalist.com/WDo4P_4t.jpg)
In both dramas a male student falls in love with his female teacher.