Umm, Teacher... ~Cucked Girl in the PE Storeroom After School~

My...
First time...
Has been...
Taken away, never to return

[Story]

Yui Suzuhara is secretly going out with her homeroom teacher (the protagonist).
One day, she is summoned by the PE teacher Tougo, and shown some incriminating photos of her and the teacher on an early-morning date.
If their relationship is found out, they'll never be able to be together again.

"I-I'll do anything you want, so..."

Young Yui didn't yet realize the full extent of the word "anything", but the promise was made.
Tougo immediately makes sexual demands of her, and Yui is forced to surrender her body to him for the sake of her beloved.

The protagonist starts to realize something is off with Yui of late, and becomes suspicious...

[Main Characters]

Yui Suzuhara
CV: Haruto Tsuruya
The main heroine. Kotori's stepsister (her new father's daughter).
She's secretly going out with the protagonist, though they've only advanced as far as hand-holding.
However, even that makes her turn beet-red.
A hard worker that studies diligently, and is part of the student council.
Gets along well with Kotori, and often confides in her about the protagonist.

"I-I also love you, teacher. I really...love you."

Kotori Suzuhara
CV: Rizu Sawashiro
The sub-heroine, and Yui's little stepsister.
A curious and energetic girl that's eager to grow.
Unlike Yui, she loves to play around more than study.
She often advises Yui about love, though she sprinkles in some teasing.
It's thanks to Kotori that Yui was able to work up the courage to confess her feelings to the protagonist.

"So...have you held hands yet? Kissed? Or...perhaps you already..."