Tag Alias: chou-sen -> chousen_(ikkitousen)

Aliasing chou-sen -> chousen_(ikkitousen).

Reason:

Hm, can you elaborate a little? There are multiple series that use the Rot3K characters and I can't quite remember where Ikki falls in which version of the name we assign. Are other Ikki characters using qualifiers? I see chousen is the Koihime character.

I'd be more inclined to move the Koihime Musou character's posts to chousen_(koihime_musou), as any Ikkitousen character inevitably gets a crapton of fanart and spots in Megami.

Still, I'd suggest waiting until the Ikkitousen Chousen's full name is revealed. That should serve as a no-hassle differentiation.