This was a pretty decent volume. The Kara scienentist Amando appears, and gives some of information on both the Otsutsuki and Isshiki. Koji confronts Jigen, during which time Isshiki's tru appearance is reveled. And we learn Koji's true identity at the end of the last chapter
Major spoilers:
The scientist Amando deflects to Konoha, and places a bomb on Shikadai, as levarage to genrentee his asylum. Amando is taken into custedy and is interogated by Naruto, Shikamaru and Sasuke. During this time Amando reveles both he and Koji are working agianst Isshiki.
Amando explains alot of details about the Karma marks, such as thier function. Which is to allow for the rebirth of the otsutsuki clan memeber who placed the mark on thier host. He explains while many hosts can be marked with Karma when the otsutsuki transfers to one host all others are disconnected. This means if Isshiki takes on his full Otsutsuki form in Jigen his connection to Kawaki will be severed. Which is what occures during Koji and Isshiki's fight. Amando states now is the best time to kill Isshiki, since when he awakened his connection to Kawaki was severed and Jigen's body is severly weakened.
Amando also gives information about the Otsutsuki themself and thier plans. Such as they are parasitic aliens that go world to world growing Divine trees to harvest chakra fruit. The growing of the divine tree kills all life on the planet. To grow the Chakra tree a ten tailed beast is placed deep in the earth to act a seedling for the divine tree.
Amando also explain that Monoshiki will try to revive himself throught Boruto. With the Karma mark he placed on him. He also states that the karma mark is advanced alien technology and the personality is transfered thought data.
Koji uses one of his toads and Amandos glasses to allow Naruto and the others to view his fight with Isshiki. Naruto then starts to realize Koji's resemblence to Jaraiya. Koji is successful in forceing isshiki to fully awaken in Jigen's body which severs isshiki's connection to Kawaki and kills Jigen. Isshiki then attacks Koji causing his mask to shatter. It is then revealed that Koji is indeed Jaraiya's clone.
Fan Rant: (Koji is a clone)
When I thought Koji was a villian genuinely working with Kara I did not want Koji to be Jaraiya. But once it appeared Koji was working against Isshiki I wanted Koji to be Jaraiya. For a few reasons such as getting to seeing Jaraiya in the story again, having him see Naruto as hokage, and that fact that Jaraiya felt unfulfilled at the time of his death. Althought the story line of the hero who died is actually still alive but is a villian has been done with Obito; And the story line of the hero pretendeding to be a villian to gain the trust of the evil organization has been done with Itachi. Althought both these story lines have been used in Naruto before I would not have minded if it returned Jaraiya to the story.
I don't see where the story will Jaraiya's clone will go. Naruto and others would not have any reason to be attached to jaraiya's clone. Maybe Naruto will sympathesize with Koji's becuase of the fact he was grown to be killed by Isshiki, but it wont be all the story possibilities of Jaraiya returning to the story. Such as meeting Naruto as hokage, Seeing the other sanin again or rejoining the hidden leaf village.
It also does not make sence that Jaraiya's clone would have all his powers. Such as his summoning powers as they are not genetic. Also Koji's age does not make sense. If Jaraiya was killed when Naruto was 16 and Naruto is 33 right now the max age Koji would be is about 16-17 years old. The only way the age could make sense is if Koji was cloned to be an adult.
Enless maybe koji is cyborg like Delta. When Amando was defecting Delta caught them. So Amando gave a command to shut her down. Koji then wondered if he also had a similar shut down code. Does this mean Koji is also a Cyborg. It seems unclear.
Fan rant: (Isshiki's hosts)
It is reveled by Amando that Jigen is isshiki's first host. The one he entered after he was injured by Kaguya. It does not seem to make sense that Isshiki would go centuries without taking a anther host.
You'd think since the time of Kaguya he would have taken hundreds of hosts.
Why would he wait entill jigen is about to die to look for anther host such as Kawaki. What was Isshiki doing for all these centries?
Conclusion:
Sorry for the long rant about Koji, I think I was looking forward to Koji being Jaraiya and was disappoint to find out he wasn't. Also I did not like how long Isshiki has gone without taking anther host it just does not make much sense to me. Overall I do like when they give explanation but it seemed like alot of the information Amando gave about the Otsutsuki was already know, such as they are aliens and they gather chakra fruit.