kakarimusubi, a phenomenon in classical Japanese where certain words (a subset of 係助詞 (kakari-joshi)) provoke the usage of different verbal inflexion at the end of the sentence (呼応 (koō))

everything

(colloquial) current boyfriend

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

everyone, one and all

(informal) no problem

unthinkable, out of the question

practical question (problem)

matter of life or death / (idiomatic) an extremely urgent matter

viewing as a problem