Kohaku shows Senku to her village, but it’s going to take some convincing before they let him in. In the meantime, he makes friends with a like-minded, promising “sorcerer.”
Rubbing it with leather instead of your hands 
will give you ten billion times more power.
.حكّها بالجلد بدل يديك سيعطيها قوة بعشرة مليارات الأضعاف
Ist aber 10 Milliarden Mal effektiver,
ihn mit Leder zu reiben.
C’est 10 milliards de fois
plus puissant avec du cuir,
Usare la pelle anziché strofinarlo con le mani 
ne aumenta la potenza di millemila volte!
Você consegue dez bilhões de
vezes mais poder esfregando com
Если тереть его кожей,
мощи в миллиард раз больше!