Author revealed the news in a Twitter Spaces session.
Hiro Mashima - News - IMDb
Happy and Other Fairy Tail Character Designs in Edens Zero
Hiro Mashima's Edens Zero Manga Kicks Off Final Arc – Otaku USA Magazine
Edens Zero Season 2 New Key Visual Revealed - Fossbytes
Qoo News] Fairy Tail mangaka publishes new work Eden's Zero in 5 languages
Fairy Tail Creator Comments on HERO's Crossover Release
Fairy Tail and Edens Zero Creator Hiro Mashima Reveals New Manga Is in the Works
Fairy Tail, Edens Zero Creator Announces New Series
Marvelous announces Project Magia featuring character designs by Hiro Mashima - Gematsu
15 Things Manga Fans Need to Know About Eden's Zero
Hiro Mashima Announces Title Change to Heroes Manga
Fairy Tail & Eden Zero mangaka launches new manga Dead Rock
Fairy Tail and Edens Zero Creator Already Has an Idea for Next Series