@lamp @divVerent Achieving the highest quality of 漫画-style drawings can do great harm to the artists wrists and fingers and also to the rest of their body (as they stay inside for hours or days or weeks in dim light working on such drawings and not going outside and exercising).

Mentally it seems that few male artists can handle such long drawing process, but it seems that female artists seem to be able to mentally take it better (there are many more female artists than male artists).

Copyright and/or trademarks are only an issue if a derivative work of an existing character is drawn and not a (definitely) original character.