a male given name

strong, durable, powerful / strong, competent, good / high tolerance, resilient

strength

Demon core, a spherical subcritical mass of plutonium manufactured during World War II by the United States as a fissile core for an early atomic bomb

everything

(colloquial) current boyfriend

(slang) Alternative form of 彼氏 (kareshi, “boyfriend”)

everyone, one and all

not always, not necessarily / not completely / not exactly, not strictly speaking, not technically

stiffen / for a person to freeze, for one's expression to freeze