Previously on Dr. Stone, Senku and Taiju faced a ravaging pack of lions during their attempt to revive Yuzuriha. In a panic, they revived the strongest human from their school named Shishio.
He proved to be helpful with necessary tasks like hunting and protecting. However, Senku soon realized that Shishio’s motives were skewed from the goal of reviving all of civilization.
Shishio’s main goal was to resurrect a purified society. His answer to making sure only young people were resurrected included crushing the stones of all of the adults so that they can not corrupt society again.
Senku is playing it cool for the most part around Shishio despite knowing his actual goals to kill every adult so that they can not revive.
Operation: Save Every Last Human Being
In the meantime, Taiju is gathering the resources needed to create the revival serum. Senku plans to keep the ingredients of the serum a secret from Shishio, however, Taiju is very oblivious and blurts out that he’s acquired everything.
Shishio is instantly intrigued, and Senku knowns that if he finds out the recipe, he’ll dispose of them. So to continue Operation: Let’s save every last human being, Senku sends Shishio to get the nitric acid (one of the ingredients).
While Shishio went to look for the nitric acid, Senku and Taiju revived Yuzuriha. Senku reveals to them that Shishio is a straight murderer and they could either run away and live life together or fight with him against the murders.
Yuzuriha is down to stay with the group and fight with them right away, which is great. I like that about her.
“Advance civilization and make better weapons of science.” – Senku
When Shishio gets back, a standoff occurs between the two groups. Shishio knocks Taiju out after he threats to kill Yuzuriha and tells them to stay out of his way or get killed.
Senku decides they need to create weapons of science to take Shishio down. They reach a Buddha statue where Senku harvests bronze and then they go to Mount Fuji to get resources to make gun powder.
Shishio is smart as well as athletic because he figures this out right away. As a result, he plans to stop them before Senku can create gun powder and stop him for good.