[color=red]ATTENTION:[/color]
Niconico seiga is another digital services. They don't own every publisher's manga and every titles don't technically serialized in it. You may see the collaboration with other magazine (usually indicated as "X" ), but please put them in the original magazine. Put each manga in their respective magazine and original publisher. If you want to link the original raw, link it in the description! Different case if another publisher makes a print version, that's allowed.