Obedient Women

The protagonist who aims to be an adventurer arrives at the
"Adventurer Certification Test Center" with his peek-a-bangs childhood friend Momo.
To become an adventurer, defeat monsters and gain points through prostitution.

Our disciplinary committee is made up of three members: Misaki Saotome, the president; Reiko Toudou, in charge of student guidance; and Sakura Takanashi, the strictest disciplinarian.
The protagonist, Takashi Suzuki, has average grades, but is blacklisted by the disciplinary committee for his sloppy dress and habitual lateness.
One day, he is caught smoking behind the building by the three committee members.
Normally, he would be immediately suspended, but the three propose a unique rehabilitation program.
They decide to waive the punishment on the condition that he undergo “special instruction” in the disciplinary committee room.
However, the reality of the special instruction is that it is an excuse to satisfy the sexual desires of the three.
Takashi is at the mercy of Misaki’s high-handed control, Reiko’s sweet and poisonous seduction, and Sakura’s unexpected aggressiveness.
At first, the protagonist reluctantly follows their orders, but gradually he becomes attracted to the charms of each of the three.
Misaki’s mature sex appeal, Reiko’s seductive aura, Sakura’s innocent curiosity.
Eventually, the roles are reversed, and the three of them become immersed in Takashi’s masculine charm.
Eventually, the relationship between the four develops into a twisted love relationship.
The committee room, which is supposed to correct discipline, becomes a sexually liberated zone.

Hibiki turned into a girl because of his/her scum-big-sister's wish.
S/he was first hesitant to perform jobs in the guild, but
nowadays s/he is getting used to it and kind of enjoying it.

One of these days, she has got to go through a new mission......
In this moment, Hibiki's fate is linked with various encounters.