What’s Next for Mechamaru’s Performance?

■Shibuya Incident Arc
Anticipating the events of the Shibuya Incident, Kokichi secretly prepared three Mini Mechamaru units. Through these small remote-controlled puppets, he was able to warn Yuji Itadori and his allies about Satoru Gojo’s sealing, significantly aiding their efforts. However, once the puppets ran out of power, Kokichi’s existence completely faded, marking the end of his presence in the story.

■Final Cameo
In the final chapter’s bonus illustration of the original manga, Kokichi Muta (Ultimate Mechamaru) is depicted in a heart-pounding moment where, due to an unexpected mishap, he accidentally holds hands with Kasumi Miwa in a lovers’ grip.

Source : Jujutsu kaisen Official