 If you liked
D.Gray-man
|
 ...then you might like
Zombie-Loan
|
The most similar thing between these two are characters. If you like the relationship between the main trio in D.Gray-man, you'll love Shito and Chika.
Besides D.Gray-man being all about exorcists and akumas and zombie-loan being obviously about zombies, the characters that are involved and the pace of the anime themselves are similar. Good, quick and entertaining story lines. Both worth watching.
A group of 'gifted' young people who go around destroying the crazed bad guys, and pressured when the bad guys are suddenly getting smarter. Also, it isn't always clear who the bad guys are, though they are a bit too predictable in Zombie-Loan. D. Gray-man takes a while to get around to anywhere but then shows up with some really great plot twists. Zombie-Loan is short, but actually manages to pack a story-line into 13 episodes/OVAs. Sadly, both died before their time.