In its May 25 issue, Shukan Shincho set pens a-pushing and tongues a-wagging throughout the nation by accusing rival weekly magazine Shukan Bunshun of engaging in sneaky schemes to steal its thunder.

In 10 full pages of text and three pages of photos — roughly one-tenth of an entire issue — Shukan Shincho meticulously paraded out detailed and specific evidence of its rival's alleged transgressions.

What did Shukan Bunshun do to incur the wrath of its rival?