Senku and Taiju emerge from their petrification several thousand years after everyone in the world had turned to stone. It’s up to them to rescue everyone else and restore civilization.
It's literally an industrial-strength 
etching agent.
.إنّه وسيلة تنميش صناعي
Wird in diversen Industrien
als Ätzmittel benutzt.
Es como un agente de grabado industrial.
Es un corrosivo industrial.
C’est un agent corrosif industriel.
Una soluzione corrosiva
utilizzata in molti campi industriali.
É literalmente um agente
decapante de força industrial.
А это промышленный
реактив для травления.