Toyed With by a Blue-Skinned Succubus

The protagonist is a renowned magical prodigy, possessed of immense talent and potential. However, his life takes a dark turn when he falls into a cunning trap set by a pair of blue-skinned succubus sisters. They abduct him and place a powerful seal on his magical abilities, leaving him completely powerless.
He is taken to a mysterious facility where he is given a single, daunting ultimatum: he can only earn his freedom by defeating the succubi stationed in every room. But without his magic, he is nothing more than an ordinary boy—hardly a match for the supernatural strength and seductive wiles of his demonic captors.
To make matters worse, because he was once a magical genius, his body is overflowing with rich, concentrated mana. To the succubi, he is not just a prisoner, but an irresistible, high-grade feast… and they have no intention of letting a single drop go to waste.

Tatsumi and his childhood friends Miki and Chihiro talked every day about what they would do during the upcoming summer vacation. By chance, they befriended the overly-honest ojou-sama Yui, who transferred to their school since she admired the co-education system, as well as kouhai Kotone, who had failed to make lasting friendships after trying too hard to fit in. This new group of five friends (?) began to plan for a memorable bittersweet summer vacation that happens only once in a lifetime.

This game does not target pure, passive girls.
Instead, the targets are aggressive, flirtatious women who are used to teasing, playing with, and manipulating men.
Women who used to pick their own partners now find themselves targeted by men, triggered by debts, bets, investigations, and more.

Mariah, the granddaughter of the legendary sage, is told by his grandfather that the seal of the temple of the four elements is shaking.
She rushed ahead to solve it. Three dark messengers were trying to revive the Demon King …
Can she stop the resurrection of the Demon King …
Can she confront the evil…

This is an "Underwater Clicking Adventure" that can be played only with mouse clicks like smartphone games.
In celebration of the release of this English edition, multiple illustrations have been added to this "Plus" version!

You control a rescue robot that is in charge of supporting Karin, a girl living on a tropical
island via your PC monitor. Collect illustrations through rescuing her from the danger of
drowning, making money by fishing and spending money on your camera.

Most illustrations come with short episodes that you can enjoy scenes
where girls swim pleasantly, get drowned in water and so on.

It takes about 1 hour ~ several hours to complete all the scenes.
If you got interested in "Underwater" and the characters, please play this game!