Adultery: His Wife is a High School Student

Student detective Chijinda You works hard to solve a series of disappearances at Yabaize Academy, but behind the incidents lies the terrifying ambitions of the Advanced Science Research Club. After being caught in a trap set by the club’s vice-president and shrunk, Chijinda is attacked by rats in the sewers, nearly crushed by a female student who mistakes him for an insect, and eaten by Erika, a club member who tries to destroy the evidence. With the help of Ookiku Narue, who has followed Chijinda to the school, Chijinda enters the Advanced Science Research Club’s underground laboratory to return to his original size.

I am the founder and leader of this school’s “Game Club.”
There is only one other member, Airi Himesaki, a cute girl.
(Since there are only two members, it is actually a “game association”)
Himesaki is better at games than me.
I have never won Himesaki.
I vent my frustration by masturbating Himesaki.
However, one day, Himesaki knows that I am masturbating, and she is thoroughly teased.
“Are you being teased but have nothing to say ?”
“If you’re frustrated, why don’t you attack me ?”
Normally I would smile and ignore it, but now I can no longer stand Himezaki’s provocation.
I’ll make this guy understand.
The venue will be the gymnasium storeroom.
I started preparing…

This is the fifth entry in the "Night High" series.

That said, there's no story or anything, so you can start playing right away.
Give the demo a go!

You can touch multiple spots at once by dragging.
Just be careful not to wake her up!

You're a third-year college student living in the suburbs. After taking a competitive exam, you’re lucky enough to transfer to the prestigious Lingyun University, located on a small island not far from the mainland coast. The university boasts cutting-edge technology and frequently secures major project contracts with powerful corporations. The school itself also holds many secrets and hidden dramas waiting to be uncovered.
 
You're here to gain valuable knowledge… right? But don’t be surprised when the ladies can’t resist your charm. With over 30 romantic encounters, each more tempting than the last, you’ll find yourself drawn into sensational moments far more thrilling than textbooks. And if you’re daring enough to dig deeper, you might just uncover some hidden pleasures they don’t teach in class.
 
Of course, it’s not always about dating and talking. You need rest, and we understand that. There are plenty of fun activities for you to enjoy, such as playing games, sports, fishing, art sessions, and more, helping you build stronger stats and, most importantly, stronger connections with the girls.

The school you attend turns into a brothel late at night...?! You accidentally obtain a membership card and enter the school late at night out of curiosity, where you find a junior, senior and teacher waiting for you. Now that you've seen their other sides, who will you choose for this thrilling night?