After clearing Bad-Mouth Sugoroku, Yuichi and Tenji find themselves trapped in a dark cave for three days. During their isolation, Tenji makes the shocking revelation that he had already experienced a Tomodachi Game in the past. Meanwhile, a team of new opponents lies in wait outside, anxious to challenge the two partners to a grueling third game.
The only thing any of us can be
 sure about is our own debt.
.الشّيء الوحيد الّذي نستطيع أن نتأكّد منه هو ديننا
Wir wissen nur unseren
eigenen Schuldbetrag ganz sicher.
Lo único que podemos comprobar
es nuestra deuda.
Lo único que podemos comprobar
es nuestra deuda.
La seule chose qu’on puisse vérifier,
c’est notre propre dette.
L'unica cosa di cui possiamo essere certi
è il nostro stesso debito.
A única coisa de que podemos ter
certeza são nossas próprias dívidas.
Единственное, что мы знаем точно, —
это свои долги.