Mermaid Island's Delinquent

Months after the war for peace and his insane marriage, Keiji Hiryu and his new wives start growing his new territory in the Underworld while he ponders about the future...until Azazel calls him to help him 'test out' a new invention of his...which, as expected, malfunctions right away and ends up with him stranded in a completely different universe, in an island ruled by beautiful women with the ability to turn each other into powerful weapons through...sexual stimulation?!

It seems like is time for the delinquent to have a fun and crazy adventure once again.

(First Sequel to my 'Delinquent Dragon' story. Lemon-Heavy story. Every Characters is 18+.)