New Game+ With my Harem 5

The protagonist’s private island trip ends in him and his harem getting stranded on a real deserted island! However, they quickly adjust to life in the wilderness and take advantage of pleasures that aren’t available in the city. Soon, they realize that Elosion’s ban on relationships is null and void here, and that the protagonist can now pick a steady. How far are the girls willing to go to secure their spot as his number one?