On this day, a seed of madness sprouts within him.
Perhaps, if it weren’t for Yabunuma, this twisted fantasy would never have taken root.

I thought I knew Sakumi inside and out.
Her personality, her preferences.
She’s strong-willed, a bit sharp-tongued, but kind at heart. She loves only me and our daughter, values integrity, and isn’t afraid to call out wrongdoing, even in others.
Cheating? Unthinkable.
Yes, someone like Yabunuma is exactly the type of man Sakumi despises.
That’s why I…
I couldn’t help but imagine…
Sakumi and Yabunuma… together.

[Translated from dlsite]