This one is gold. DEFINETELY MUSTREAD. The stories are super interesting and the art is to die for. My heart feels so nice and warm after reading this manga.
-Letter (future and past) <----very interesting and cute. i want more ugh!
-childhood friends (3 years gap) <---you know how it goes. They are adorable, but not as good as the first story.
-also childhood friend (10 years gap) 25 years old and 15 years old <-- they promised to each other they will marry each other when he is 15 lol.
Samishigariya no Love Letter