Sakura's were originally designed as throw-away replacements for radiograph ink pens, used for line work in drafting. Any sort of surface that holds ink and is smooth will work with a sakura micron. I've used all of these kinds of papers with sakura's and found that they all have different qualities. Marker paper hold ink well, but you have to be careful with your hand so as not to smear, as the surface of the paper is slightly slippery. I've had best results with cold pressed illustration board for ink and marker, smooth surfaced. You should try several and see which ones you like working with.
Marker Papers are usually thin, very smooth, coated papers that have little or no bleed through when used with alcohol markers. What this means is that ink is floating on the surface, unlike matte cardstock where we want the ink to soak the whole paper and we use slow, even, saturating techniques. Marker papers use a lot less ink, and a few quick, smooth strokes will evenly color an area.
Smooth Papers:
Often called hot-pressed paper. Great for ink and graphite drawings. Provides good surface for contrasts, light and shade effects.
Medium Grain Paper:
Suitable for pastels, colored chalk, crayon and washes such as watercolor and inks.
Bristol Board:
Multipurpose paper with medium or plate finish.
Plate is great for ink work and will also take wash work. Ideal for fine detail work.
Vellum-finish (medium or kid finish bristol) is smooth enough for ink work but has enough tooth to accept graphite, colored pencil, pastel and charcoal.
Illustration Boards:
Come in both archival and non-archival and also available in smooth (hot-pressed plate) and medium (cold-pressed).