Peaceful days return after Mob's fight with Teru. As usual, Reigen continues to trick people as a fake psychic, and the president of the Telepathy Club, Kurata Tome, drags Mob around to find other espers. Then one day, a mysterious man talks to Mob's younger brother, Ritsu...
And then you two met at Black 
Vinegar Middle School, and fought.
ومن ثمّ التقيتُما في مدرسة خلّ أسود
الإعداديّة وتقاتلتُما
Und ihr beide habt euch
in der Reisessig-Mittelschule getroffen
Y los dos se toparon
en Vinagre Negro y pelearon.
Y los dos os topasteis
en Vinagre Negro y peleasteis.
Tu as dû tomber sur lui
au Vinaigre noir,
Forse tu e lui vi siete incontrati 
e scontrati alle Acetonero.
Aí vocês dois se encontraram lá e brigaram!
Вы встретились в той школе
и был бой не на жизнь, а на смерть.