A world painted by hand, one story at a time.

D&D 5e rulebooks and adventures set in Irydale, illustrated with watercolors.

Treasures Untold

350 treasures. 350 stories.
A collection of magical items for 5e where nothing is just a run-of-the-mill +1 sword. Every item has a story, ready-to-use mechanics, and built-in narrative hooks.

Who's behind it all

A table, some brushes, and a world that keeps growing.

My name is Roberto Gatto. I’ve been an illustrator and art director for over ten years, and an independent publisher for just over a year. Isshobi was born from a simple belief: that a treasure should be much more than a numerical bonus, and that the best stories are built together, around the table. Every illustration I publish is hand-painted, in the vast majority of cases using watercolors, pencils, and inks.


Over ten years painting for Wizards of the Coast, Paizo, Riot Games, Disney Lorcana and Asmodee, now painting my own world.