My First Sex Life – Student edition

This is a certain village of eternal summer. Ryuta Suguri is a young man who was born and raised there. Ryuta spent his lively days alongside his boisterous father and younger brother. One day, a beautiful black-haired girl around his own age pays a visit to his house. At first, he is flustered, not realizing who this beautiful black-haired girl is, but the truth soon clicks.
The beautiful black-haired girl who suddenly appeared was Mariya Sawamori herself—someone he had spent time with in this village for a mere few months several years ago. Ryuta and Mariya rejoice in their reunion after so many years. In fact, the two of them had fallen in love the very moment they met years ago, even going so far as to make a “promise of marriage.” Furthermore, through a strange turn of events, Mariya ends up staying at the Suguri household. From this day forward, the frozen time between the two begins to move once more; their relationship deepens rapidly, and they become lovers.
Ryuta Suguri is introverted and easily gets nervous, but he is sincere, kind, and entirely devoted. Mariya Sawamori is kind to everyone without discrimination, laughs cheerfully, and excels at both studying and cooking—a truly flawless personification of the ideal Japanese woman. Will the love between these two bear fruit just like this…? And will their “promise of marriage” be happily fulfilled…?

The cram school, renowned for its headmaster Shiina's charming looks and meticulous teaching, had a secret attic room!
A month after joining the school, the beautiful Inori was invited to the attic room for the first time.
There, she received an unexpected confession from Shiina.
"Will you be my girlfriend starting today?"
"Y-yes... if Inori is good enough for you, I'd be happy."
Inori blushed and nodded happily.
At that age, she was more attracted to older men than boys her own age.
Inori was no exception; she had fallen in love with this man, Shiina.
...Little did she know he was a succubus disguised as a gentle, refreshing man.
Shiina placed his hand on Inori's shoulder and whispered in her ear as if sharing a secret.
"Hey, since we're finally alone together, how about we have a special lesson now?"
A secret special lesson takes place in the quiet attic room.

The cram school, renowned for its headmaster Shiina's charming looks and meticulous teaching, had a secret attic room!
A month after joining the school, the beautiful Inori was invited to the attic room for the first time.
There, she received an unexpected confession from Shiina.
"Will you be my girlfriend starting today?"
"Y-yes... if Inori is good enough for you, I'd be happy."
Inori blushed and nodded happily.
At that age, she was more attracted to older men than boys her own age.
Inori was no exception; she had fallen in love with this man, Shiina.
...Little did she know he was a succubus disguised as a gentle, refreshing man.
Shiina placed his hand on Inori's shoulder and whispered in her ear as if sharing a secret.
"Hey, since we're finally alone together, how about we have a special lesson now?"
A secret special lesson takes place in the quiet attic room.

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 protagonist suddenly loses his sister and parents.
Just as he was losing the will to live, he meets a girl on his way home from university.
The girl, who somewhat resembles his sister, asks him for help, and he takes her home for just one night... and that's how their life together begins.