In the far future, people live 1000 meters deep underground. Technology is abundant, but life is a constant struggle. An organization sought to end this by sending people back in time to recover lost natural resources. Elcia is one of those people. As a Time Negotiator, it's her job to travel across various dimensions and negotiate with people of the past.

However, in a strange twist of fate, Elcia accidentally stumbled upon an unknown dimension known as "Area-X" during her very first mission. Following its discovery, more bizarre incidents and conspiracies awaited her one after another—all of this eventually led to discovering the uncanny nature of the world and how it all ties to Elcia's very own mysterious past...

The game takes place at Habataki High School seven years after Tokimeki Girl's Side 1. There are a total of six new bachelors plus three secret characters.
TMGS 3 implements a totally new system; the Love Triangle. Instead of rival girls liking your man, all six bachelors are paired with another, making it so that you can 'date' two of them at a time. TMGS 3 also introduces a revamped clothing system with a few new clothing styles and the ability to 'level up' your fashion.

After Spring takes place in Autumn, when the students of Seigatsu Gakuen are busy with preparations for the upcoming culture festival. They’re holding an exhibition, and some advisors from USA came to help the students. Yahisa Tsukiko, along with her childhood friends Nanami Kanata and Tohzuki Suzuya, was surprised to see their friend Tomoe Yoh there. Yoh came to see her in March, but left for America by the end of Spring. It turns out that Yoh is one of the advisors, and he’s staying in Japan until the culture festival is over.

Doujin game, similar to the famous Princess Maker series.

Raise a Prince into one of many different jobs. Different raising tactics lead to different endings.

The main stage is Hanegasaki High School, same as the previous game. While communicating with unique characters, players can find their surprising sides and experience more realistic love romance.

Also, new systems are introduced for this time, "Second Kiss System" that players can enjoy the story born by an accidental kiss and "Approach System" that players can approach their favourite boys. Enjoy "Tokimeki" moment!

The player is the main character, a new student at Habataki High, Habataki City. The goal of the game is to create a relationship with one of the ten males that are available to you, so that on the last day of your high school, you will receive his confession of love at the chapel in the school.

Christina was the third princess of Almenan, and born in the era of war against the Demons. Having the status of a “Champion”, Christina had countless battle victories upon her shoulders and was feared by the Demon race.

Being the most successful of her three sisters, her mother the queen sent her on a secret mission to assassinate the Demon Lord Gardis in return for his ruthless annihilation of the Kingdom of Crofts.

Obeying her mother’s orders for the sake of her kingdom, Christina set out alongside with her most loyal knight Lezette to take the Demon Lord’s head, and to bring peace to the land. But they soon discover the Demon Lord and his people are not as ruthless as they have been told all their life.

The first of the four Starry Sky games starring the characters from the drama CD's of the same name.

Starry Sky takes place at Seigatsu Gakuen, a school which specializes in horoscopes, astronomy and other related topics. The main characters are all based on horoscopes.

Starry Sky Spring features Suzuya Tohzuki (Cancer), Kanata Nanami (Pisces) and Yoh Tomoe (Capricorn). It follows main character Tsukiko Yahisa, who's the first girl to enroll in the school, and her first semester there, which she spends with her childhood friends Suzuya and Kanata along with Yoh, a transfer student who came from France.