I see, my friend. But I also have no idea about Topcomics VS Kodansha. I don't know what they think.
Korean and Japan manga are much different in details. For example, you'll not see Korean manga sex scenes of under 18 characters in school uniform. You rarely see true incest sex (same blood). But in Japan, you saw 13+ girl in school uniform sex scene because the Japan government allow girl to have sex since 13 years old. You saw many real incest (same blood) sex scene, etc.
These are just the examples of differences. So, Topcomics and Kodansha can't be compared in what they do in details. Their damage controls are different.