Note:
Only allowed "original" series serialized on eBookJapan. If you want to connect it as "digital store", just put a note in the description. Some old series distributed by eBookJapan, but that doesn't mean they own the serialization. Practically it's applies to all retailer store as well. Digital manga can be found almost everywhere today.

eBookJapan and eBookJapan Plus are the same. The only difference is that they hold different content.

• eBookJapan -> more general (Shoujo, Shounen,...)

• eBookJapan Plus -> for adult (Yaoi, Seinen,...)
  Label: BLfranc, Minna no Comic