Jinrui Saikyou no Tokimeki

The third instalment of the Saikyou Series.
Aikawa Jun, Humanity's Strongest Contractor. At the request of Nagatoro Toromi, she sets out for a newly-born volcanic island. What does Aikawa Jun have to compete for survival with? Plants?! A spectacle of the "strongest", sprouting from "nonsense", and growing beyond "human"!
(Source: Kodansha, translated)