Kohaku’s sister, village priestess Ruri, is gravely ill. Senku, Chrome and Kohaku begin their quest to make antibiotics to save her life.
So even the great Senku 
doesn't know about this rock!
!إذًا حتى سينكو العظيم لا يعرف بشأن هذه الصخرة
¡Así que el gran Senku
no conoce esa piedra!
¡Así que el gran Senku
no conoce esa piedra!
Então nem mesmo o grande 
Senku não conhece essa pedra!