There is a murder aboard the ship carrying the people rescued from Dotou Island, and Kyoho is the primary suspect based on the evidence. Despite his claims of innocence, there is no proof to back him up. Despite that, Kagura chooses to believe Kyoho. He places Boruto and Iwabe in charge of watching Kyoho while everyone else splits up into teams to search for any clues that may point to another culprit.

If we don't come up with anything,
we'll know for sure.
.إلّم نجد أيّ شيء، فسنكون متأكّدين
Cuando no aparezca nadie,
quedará todo claro.
Cuando no aparezca nadie,
quedará todo claro.
E se non dovesse venirne fuori niente, 
allora le colpe saranno chiare.
Se não acharmos nada, 
teremos certeza.
А если никого не найдём,
то и убийца уже у нас.