A 14-day summer vacation adventure on a quiet island reuniting with two childhood friend sisters, featuring exploration, fishing, daily life simulation, and fully voiced erotic interactions including 3P.

A survival game where a guy and his childhood friend, Nanami Mitsuki, wash up on a deserted island. They gather resources, build tools and facilities, level up stats and skills, and ultimately craft a boat to escape—while mutually helping each other relieve building sexual urges through handjobs and more as their bond deepens!

"Summer Sky Triangle - NTR -" is an RPG where you play as a protagonist striving to become a better man for his attractive girlfriend, Himari, by joining the cultural festival committee. While working towards a successful festival, three men approach Himari with ulterior motives, leading to secret relationships that unfold behind the scenes. Your choices shape the story and the heroine’s fate.