User blog comment:Mangetsu20/The Hollow Victory and The Cursed Boy (FTC 435,436 - Victory Shout, Memoirs)/@comment-1675383-20150520154816

I'm pretty sure Kishi, Oda, and Kubo all have weekly lunch meetings and discuss about what they have planned for their series while Hiro is two tables away taking snippets of what he hears and just throwing it into Fariy Tail.