あ a、みんな minnaには niha内(ない)緒(しょ) naishoだ daよ yo？寮(りょう) ryouを o夜(よ)中(なか) yonakaに ni抜(ぬ)け()出(だ)す() nukedasuの noは wa厳(げん)罰(ばつ) genbatsuだ daから karaね ne？ Oh, keep this a secret from everyone, okay? Sneaking out of the dorm at night means severe punishment. Literal Ah, everyone [to-に][topic-は] secret [emphatic-だよ]? Dorm [object-を] midnight [at-に] sneak-out [nominalizer-の][topic-は] severe-punishment [reason-だからね]? 内緒 'secret.' 寮を夜中に抜け出す 'to sneak out of the dorm at night' — 抜け出す is a compound verb: 抜ける 'to slip out' + 出す 'to go out.' 厳罰 'severe punishment.' The rising だよ？ and だからね？ are not real questions but emphatic confirmations — 'got it?' schoolwarningscompound verb
あ a、みんな minnaには niha内(ない)緒(しょ) naishoだ daよ yo？寮(りょう) ryouを o夜(よ)中(なか) yonakaに ni抜(ぬ)け()出(だ)す() nukedasuの noは wa厳(げん)罰(ばつ) genbatsuだ daから karaね ne？ Oh, keep this a secret from everyone, okay? Sneaking out of the dorm at night means severe punishment. Literal Ah, everyone [to-に][topic-は] secret [emphatic-だよ]? Dorm [object-を] midnight [at-に] sneak-out [nominalizer-の][topic-は] severe-punishment [reason-だからね]? 内緒 'secret.' 寮を夜中に抜け出す 'to sneak out of the dorm at night' — 抜け出す is a compound verb: 抜ける 'to slip out' + 出す 'to go out.' 厳罰 'severe punishment.' The rising だよ？ and だからね？ are not real questions but emphatic confirmations — 'got it?' schoolwarningscompound verb