JJK Modulo has started off really well with its new story after the end of the original series.
The first chapter showed the arrival of the Simurians and introduced the Okkotsu siblings, Yuka (Granddaughter of Maki and Yuta) and Tsurugi (Grandson of Maki and Yuta).
Now JJK Modulo Chapter 2 takes the next step with diplomacy, alien secrets, and the legacy of Yuta and Maki.
Warning: This article contains major spoilers from JJK Modulo Chapter 2.

Japan Meets the Simurians in JJK Modulo Chapter 2 Spoilers
JJK Modulo Chapter 2 starts with Usami and Mino on their way to the Kyoto Future Science Museum, where the meeting with the Simurians will happen.
Mino is worried about risks like diseases or other unknown effects that might come from contact with aliens.
Usami replies that their culture, history, and even their beliefs are all unknown, and that is what makes them dangerous.
He compares it to pathogens, saying their mothership is like a warehouse that could carry anything inside it.
The aliens introduce Jaba Roma, their diplomacy lead, and Cross, their envoy. To everyone’s surprise, they speak perfect Japanese.
Mino is caught off guard, realizing Japan is already at a disadvantage. The meeting becomes tense when Cross shows his power, and Usami understands they cannot risk making enemies. They are forced to accept the Simurians’ demands.
The Mission for Yuka and Tsurugi
The Simurians want Maru to hide his real identity and live among sorcerers. Usami decides Yuka and Tsurugi will take on this role.

He believes young sorcerers can form real bonds with the aliens, while Mino thinks the responsibility is too much for them.
Usami explains that the aliens are being treated as refugees, not invaders, but this is only based on their own claim. If the truth spreads, panic and conflict could follow.
The Okkotsu Siblings Learn the Truth
Later, Yuka and Tsurugi talk about the situation. Tsurugi reveals that Japan has full responsibility under the treaty, and some officials already see the Simurians as dangerous as Sukuna.
On a mission, they capture a curse user who confirms the mothership is above Japan, hidden by a barrier, and says it will be visible during a resupply in Nagano the next day.
The Legacy of Yuta and Maki
At night, the siblings climb to the mountains and see the massive ship appear in the sky. They talk about their grandparents. Yuka says she wants to become like Yuta, while Tsurugi wants to become like Maki.

Maru and Cross Disagree
JJK Modulo Chapter 2 closes with a split between the aliens. Maru believes coexistence with humans is possible, while Cross is doubtful.
Cross tells Maru to keep watching the sorcerers, but later shows cold hostility when he meets Tsurugi, hinting at more conflict in the future.

