Blade of Science (科学の刃 Kagaku no Yabai) is the forty eighth chapter of the Dr. Stone manga.

Summary

For the village's advancement, Senku Ishigami, Chrome, and Kaseki start forging Japanese swords for all their warriors. Senku explains how the task of making these swords is very difficult and tedious, but Kaseki easily learns it. Kaseki was able to make enough swords to equip every capable fighter in the village.

Later on the village was attached by Tsukasa Shishio's people. The villagers faced off against Hyoga and his followers, but the villagers the upper-hand due to there advanced weaponry, as they broke the enemies weakly forged weapons.

Gen's betrayal was revealed to the villagers as he was seen telling them information of the village and its strongest fighters, but was also helping the villagers by implying that teaming up will help them win. Kohaku and Magma then team on, defeats Magma but before stabbing Kohaku; his weapons break. It is revealed that Gen double-crossed by tampering with his weapon, causing it to fall apart in battle.

Gen and Senku team up as they attack him their new swords.

Characters in Order of Appearance

Chapter Notes

  • Hyoga's spear is destroyed by Gen.
    • Gen officially allies with Senku with his betrayal revealed.

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[v  e]
Chapters and Volumes
Volume 1 1234567Extras
Volume 2 89101112131416Extras
Volume 3 17181519202122232425Extras
Volume 4 262728293031323334Extras
Volume 5 353637383940414243Extras
Volume 6 444546474849505152Extras
Volume 7 535455565758596061
Volume 8 626364656667686970
Volume 9 717273747576777879
Volume 10 808182838485868788
Volume 11 899091929394959697
Volume 12 9899100101102103104105106
Volume 13 107108109110111112113114115
Volume 14 116117118119120121122123124
Volume 15 125126127128129130131132133
Volume 16 134135136137138139140141142
Volume 17 143144145146147148149150151
Volume 18 152153154155156157158159160
Chapters not yet in tankōbon format 161162163164165166167168169170171172173174175176
[v  e]
Story Arcs
Prologue Saga
Stone Formula Arc
Chapters 1234
Episodes 12
Vs. Tsukasa Arc
Chapters 56789101112
Episodes 345
Ishigami Village Saga
Kingdom of Science Arc
Chapters 131415161718192021222324252627282930313233
Episodes 5678910111213
Village Games Arc
Chapters 34353637383940
Episodes 131415
Village Origins Arc
Chapters 4142434445
Episodes 1617
Stone Wars Saga
Vs. Hyoga Arc
Chapters 4647484950
Episodes 1819
Communications Arc
Chapters 5152535455565758596061626364656667686970717273747576777879808182
Episodes 2021222324
Source of the Petrification Saga
Age of Exploration Arc
Chapters 8384858687888990919293949596979899 100
Episodes
Treasure Island Arc
Chapters 101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138
Episodes
The Truth of the Petrification Saga
New America City Arc
Chapters 139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169
Episodes
South America Arc
Chapters 170171172173174175176
Episodes
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