Koenchu! Voice Actress Tale ~You, the sky and summer~

You’re a 21-year old man who never had any relationships, but thanks to your archaeologist father you could enjoy your hobby - collecting ancient artifacts. Once, you touch a strange gem in your father’s room, and a powerful demoness Arlecchino appears, threatening to take you to Hell with her!
However, thanks to Alicia, a powerful witch, you managed to strike a deal with the demoness - you have two weeks to find yourself a girlfriend and lose your virginity with her… Finding a girlfriend is hard when you’ve only romanced them in video games. Flirt, give them gifts and improve your relations. Make them fall in love with you or burn in Hell!
You’ll have a handful of mini-games to manage this task. First, make small talk, find out more about her and charm her with your erudition and insight in the style of a quiz. This won’t have to be in-person - if you get her number, you’ll have more chances talking with this beauty via messenger. Second, there’s a diary, where you note all the girls’ likes and dislikes. It’s hard thinking straight when there’s so many cute girls around…
Time is not on your side, so start winning girls’ hearts right now!
✌️ Sexy and unique characters
✌️ 5 separate storylines
✌️ 5 non-repetitive endings
✌️ High quality animated H-scenes
✌️ Dating simulator
✌️ A dialogue system with comics-style overlay
✌️ Colorful locations
✌️ Several different mini-games

The protagonist was traveling with his wife.
An illicit rendezvous with a flight attendant begins quietly in the extraordinary setting of the airplane cabin.

After being dumped by my girlfriend due to poor sexual skills, a familiar-looking Japanese girl transfers into my department.
 
To my surprise, she turns out to be an active AV actress! Not only is she willing to teach me how to improve my skills, but she also encourages me to hook up with others to gain experience.
 
With things coming this far, there’s no turning back—I’m determined to master techniques that even an AV actress can't handle.

The guests at Sky Resort are buzzing with excitement, their bodies and desires pulsing with anticipation, eager to take the fun to the next level!
 
Dive headfirst into a world where pleasure knows no limits, following their steamy, lustful adventures. At Sky Resort, the heat never cools, the sex never fades, and the naughty times are only just beginning. From passionate encounters under the stars to intimate moments behind closed doors, every fantasy finds its release in this haven of untamed desire!

In a quiet, somewhat remote town, Hannah lives with her father and younger brother. Eventually the summer break comes, and with it the question: "How to spend the last summer before her senior year in high school?" Explore Hannah's town and its surroundings, and find out what opportunities may hide there.