A collection of early short pieces by Natsume Ono accompanied by an illustration gallery. Many of these short stories were first published as dōjinshi or on Ono's website, and IKKI Comix has collected them together here along with a few stand-alone pieces published in its own magazine.

Tesoro was published in English by VIZ Media under the SigIkki imprint on November 15, 2011.