Instead of returning home with Boruto, Mitsuki stays with Kokuyou. During this time, Sekiei becomes sick and declines. To recover, Kokuyou returns to his comrades. During his absence, Sekiei asks Mitsuki to teach him what it means to be human.  Meanwhile, the Fourth Tsuchikage Kurotsuchi, who had been visiting Ohnoki, her ailing grandfather, is attacked by mysterious assailants.
So even Grandfather
can't beat old age, huh?
إذًا، حتّى جدّي لا يستطيع هزيمة الشيخوخة؟
Opa kommt gegen das Alter nicht mehr an.
Él tampoco puede vencer a la edad.
Él tampoco puede vencer a la edad.
Nemmeno il nonno 
può farcela contro la vecchiaia, eh?
Então nem o vovô consegue
vencer a idade...
Даже старику возраст не одолеть…