Ep. 11: Senku crafts glasses for Suika using quartz sand and glass
Aired on September 13, 2019

Senku utilizes quartz sand to manufacture glass, creating corrective eyewear for the nearsighted Suika. Because Chrome lacks the technical ability to blow functional laboratory glassware, he recruits the skilled artisan Kaseki, who successfully adapts to working with the unfamiliar material. To celebrate the establishment of their new laboratory, Senku proposes a dangerous mission in which he will forge a silver spear for Ginro. This narrative highlights the group's reliance on specialized craftsmanship and their willingness to undertake risky tasks to support their scientific endeavors and community needs.
Episodes
- Ep. 7 · Senku meets Chrome and decides to help him create an antibiotic for Ruri
- Ep. 8 · Senku and allies seek antibiotic elements with Suika's help to create iron and ramen.
- Ep. 9 · Senku uses magnets to create a generator and lightbulb while Gen Asagiri observes.
- Ep. 10 · Gen survives Magma's attack and trains for the Grand Bout with Kohaku.
- Ep. 11 · Senku crafts glasses for Suika using quartz sand and glass
- Ep. 12 · Senku reveals the silver spear's true purpose as a gas sensor for sulfuric acid.
- Ep. 13 · Senku joins Grand Bout for alcohol while Suika aids Kinro against Magma
- Ep. 14 · Magma cheats to win while Chrome uses tears and glasses to create fire against him
- Ep. 15 · Senku defeats Ginro to become chief and cures Ruri with sulfa drugs