The D.Gray-man Investigation Series (?) is a two-part omake on the favorite foods of different D.Gray-man characters.
Allen: Although we've already released details about many of our characters in previous volumes, for some reason this particular question continues to come up a lot, so we've decided to do everyone at once!
Kanda: Next time somebody asks us personal questions, I'll kill him!!
|Allen: Mitarashi Dango - (skewered rice dough dumplings) Unlimited!||Lenalee: Chocolate cake!|
|Kanda: Soba. (buckwheat noodles) Don't tell me it's not nutritious.||Lavi: For men, it's yakiniku! (grilled meat)|
|Krory: Eliade's b-blood.||Miranda: P-P-Pears, I guess. Hee hee hee hee...|
|Marie: Dorayaki. (pancake filled with bean jam)||Daisya: Shark!|
|Bookman: Pudding.||Suman: My wife's food is the best in the world!|
Lero: We found out what the Earl's and the Noah's favorite foods are too, Lero.
Road: Speaking of which, what do you eat, Lero?
Lero: I'm a golem. I don't eat anything, Lero!
|Earl: Alligator!♥||Road: Candy and Allen!♥ Timcanpy would taste good too!|
|Tyki: Whatever I eat with Eeze hits the spot.||Skin: I wanna eat a house made out of sweets!|
|David: Fried rice omletes!||Jasdero: Super-spicy curry!! Glurp!!|
|Manga Omakes:||Character Profiles • Discussion Room • Komui's Discussion Room • Komui's Discussion Room Special Edition: Noah's Ark • D.Gray-man Investigation Series (?) • Weekly Jump Polls • Character Bedroom Sketches • The People of D.Gray House • Pointless D.Gray Stories|
|Anime Omakes:||D.Gray-Omake Mini Theatre|
|Fanbook Omakes:||Zone (Robin/Julia) • D.Gray-man Official Fan Book Gray Ark • D.Gray-man Illustrations Noche • CharaGray • D.Gray-man Official Fan Book Gray's Memory • D.Gray-man - Artbook - Gray Walker|