Pentaerythritol tetranitrate is a type of explosive and is very powerful.

Danzan-ryūDanzan-ryū

En'yō e ryō ni deru to, ikkagetsu, maguro nara nikagetsu no yo mo, umi no ue de kurasu no de aru.When they go out to the open sea to fish, they live on the sea for one month, more than two months if fishing for tuna.