Quick Summary
In Dr. Stone episode 13, “Masked Warrior,” Senkuu, Kohaku, Chrome, and Suika gather the final ingredients for antibiotics. They’ve finished collecting the most dangerous ingredient — at least dangerous from the perspective of the ingredient itself potentially killing them. Because when Kohaku learns the source of the last ingredient, she seemed on the verge of killing Senkuu and Chrome herself. Meanwhile, Kinrou and Ginrou continue their preparations to battle Magma. Will their extensive preparations — some bordering on illegal! — help Kinrou win? Or will Magma’s minions come up with a scheme to derail them?
Note: This post may include spoilers, so be cautious.
Best Moment in the Show

When it comes to her sister, Kohaku has discovered an ethical flexibility she never knew she had. And she seems completely comfortable with it. Capture from the Crunchyroll stream.
Over the course of the first cour, I’ve really gotten to like the characters in this show. They have distinctive personalities. They interact well together. And they’re starting to show complexities that I didn’t expect.
That’s the kind of thing I look for in a show.
We’ve seen Kohaku repeatedly accuse Senkuu of being sketchy. In this episode, Ginrou, who’s also shown a sketchy side, teamed up with Senkuu to game the Grand Bout. Much to Kinrou and Kohaku’s disgust, they had come up with an elaborate scheme to tire out Magma while preserving Kinrou’s strength. If they could only delay when Kinrou faced Magma, they could give their friend the advantage.

Kinrou and Kohaku has some reservations about the scheme — or plan — that Senku and Ginrou concocted. Capture from the Crunchyroll stream.
In what I’d call my second favorite moment, Kinrou turned to Kohaku and asked if she was okay with all of this. “Well, I mean,” she said (07:55), “if it improves Ruri-nee’s changes of surviving, even just a little bit…”
That really made Kinrou stop and think. That alone made it worthy of being my Best in Show moment, but it’s really Kohaku showing how far she was willing to take the idea that won me over. Kohaku was thinking back to how hard Chrome had trained, even though he knew he had zero chance of winning. All he wanted to do was inflict enough pain on Magma to slow him down.
“I’m practicing hitting Magma’s weak spot,” he said proudly (11:06). When Ginrou questioned him, Chrome said, “Yep! His wee-wee!”

I have to give Chrome credit. He knew he has no real chance of winning. But he wanted to do everything he could, even if it meant just tiring Magma, to help Ruri. Capture from the Crunchyroll stream.
Suika looked scandalized. But Kohaku? She just said (11:12), “I agree. If the goal is to wear him down, then it makes sense to go for his testicles.”
Kaseki was a little freaked out and called her tactics insane, though he tried to be philosophical about it. From my perspective, though, it proved just how much Kohaku loves her sister — and she has the depth of character to reconsider her morality and ethics in the context of her sister’s health and safety. Is that moral relativity? Or simply one sister caring for another?
Would it be moral to behave any other way?
Good characters drive that kind of conversation! I’m really glad to see Dr. Stone showing it has this kind of depth.
What did you think of Ginrou and Senkuu’s tactics? What was your Best in Show moment? Let me know in the comments!
Other Posts about This Series
Other Anime Sites
This Site (Crow's World of Anime!)
- Review: Dr. Stone Episode 01 – Best In Show
- Review: Dr. Stone Episode 02 – Best In Show
- Review: Dr. Stone Episode 03 – Best In Show
- Review: Dr. Stone Episode 04 – Best In Show
- Review: Dr. Stone Episode 05 – Best In Show
- Review: Dr. Stone Episode 06 – Best In Show
- Review: Dr. Stone Episode 07 – Best In Show
- Review: Dr. Stone Episode 08 – Best In Show
- Review: Dr. Stone Episode 09 – Best In Show
- Review: Dr. Stone Episode 10 – Best In Show
- Review: Dr. Stone Episode 11 – Best In Show
- Review: Dr. Stone Episode 12 – Best In Show
- Review: Dr. Stone Episode 13 – Best In Show
- Review: Dr. Stone Episode 14 – Best In Show
- Review: Dr. Stone Episode 15 – Best In Show
- Review: Dr. Stone Episode 16 – Best In Show
- Review: Dr. Stone Episode 17 – Best In Show
- Review: Dr. Stone Episode 18 – Best In Show
- Review: Dr. Stone Episode 19 – Best In Show
- Review: Dr. Stone Episode 20 – Best In Show
- Review: Dr. Stone Episode 21 – Best In Show
- Review: Dr. Stone Episode 22 – Best In Show
- Review: Dr. Stone Episode 23 – Best In Show
- Review: Dr. Stone Episode 24 – Best In Show