Witness the dark origin of betrayal in "Tsuma Neri Zero: My Mistake, Her Choice." Takafumi’s dream of opening his own restaurant is finally within reach, thanks to the school chairman’s investment. As he leaves for a few days to prepare, his wife Makoto is left alone, anxious about working late with a senior teacher, Anno. Believing his wife is in safe hands, Takafumi is blind to the predator lurking in the shadows. That night, a simple cup of coffee becomes a trap, shattering their trust and setting the stage for a devastating spin-off from the acclaimed series.