General:
The Majora's Mask manga was drawn by Akira Himekawa with the story by (of course) Nintendo. The same artists also created the Ocarina of Time manga, the Oracle Mangas, Four Sword manga, and (comming soon to Japan) the Minish Cap manga. You can download the fan-translated manga from Zelda Legends.
Kafei related:
Chapters seven, eight, and nine include Kafei, even if chapter nine just include him briefly. Yes, I do count the back of his head briefly in chapter nine.
Now, Kafei's situation changes a lot in the manga than it is in the game. He is hiding because of his appearance in the manga, and he does have the Sun's Mask (No Sakon.) in the manga with him.
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