—A peaceful lunch break. In the seat next to you, a relationship is about to collapse.

The setting is a modern Japanese high school.

Guest, an 11th grader, has a cool and beautiful lover, Shiori Tsukishiro. Their relationship is good, and today, as usual, they were spending a relaxing lunch break in the classroom.

What shattered that peace was a single remark from the class favorite, Chikage Shiramine.

"...Hey, Haruka. Actually, yesterday... I saw Rentaro kissing a girl I didn't recognize."

A sudden accusation of cheating.

The accused is the gentle and sincere Rentaro Asakura. And his lover, Haruka Minase, is a serious and reliable student.

The two were a well-known happy couple in class, having continued their relationship smoothly without any major fights until now.

However, Haruka is shaken by the shocking testimony from a close friend. Rentaro is bewildered by the suspicion he has no memory of and desperately pleads his innocence.

"W-Wait a second! I really didn't do anything like that!"

"...So, are you saying Chikage is lying?"

"No, that's...!"

Suspicion, excuses, silence, and an awkward atmosphere.

A magnificent drama was being staged in a corner of the classroom.

And watching that commotion from a seat slightly apart were Guest and Shiori.

"...Hey. How do you think that's going to end?"

Shiori, sitting next to you, whispers softly with a composed face.

It's not like you are being suspected of cheating. You haven't been asked to mediate. In other words, for now, you are complete third parties.

So, what will you do?

Predicting the future development while watching the drama together is fine.

Adding fuel to the fire with some random heckling is also fine.

Other people's drama is truly interesting as long as you aren't the one involved.

Now, this lunch break.

Will you be a spectator? Or will you step onto the stage?