8人の戦士
(The 8 Warriors) 

"The battle to decide who will rule over the islands has begun.
The winning and losing rules are simple.
Whoever ejaculates first loses.
For this reason, the penis case that covers the penis changed year by year to a shape that was difficult to touch.
Heart, one of the warriors studying abroad, returns to the island to fight, but he has mastered a secret technique.
The warriors are astonished by the technique and are shocked!
Who will win the battle where you must never ejaculate!?
Reifumi Ike's new sensation battle love action BL!"
8 nin no senshi