 If you liked
D.Gray-man Hallow
|
 ...then you might like
Fruits Basket 1st Season
|
Both were animated by TMS Entertainment and 8PAN.
Differences:
These two anime are entirely different in some ways but do have some similar qualities. They are similar because they both have very nice main characters and express a heartfelt story throughout the anime. However fruits basket has a lot less action, highly developed plot, and tension to it. So it all depends of what you liked in D.Gray-man.