Saiin! Zenra-jima

Kengo Inada, a third-rate businessman, is assigned to the isolated island of Maera Island in the middle of the ocean! However, the island is a "nude island" where all the inhabitants have full pussy! There are 3,000 girls on the island and only one man, Kengo! The island's girls are all over Kengo's dick after not seeing a man for a long time! Moreover, the island is covered with a lewd plant called "mammoth", which keeps both the girls and Kengo in heat 24 hours a day! Kengo is now living as the only "seed man" on the island, but there is a secret to this island! What is it?

(Source: Mujin Comics, translated)

Note: Published in Comic Mugen Tensei 2021-02, 04, 06, 08, 10, 12