 If you liked
Sarashi Asobi
|
 ...then you might like
Yaotsukumo
|
Both mangas has a main male character who protects the heroine, both male characters are imortal (though in SA Ai is a shinigami and in YT Yao is imortal because of a spell), both heroines have straightforward, cute personalities.
There is a similar feel to them, both of them are really, really, good, so if you've read one, you'll definately enjoy the other