notadictionary.com
ケツにスクラブをし、念入りに洗ったあと化粧水と乳液を叩き込んだ
→ “I did a scrub on my butt, and after washing it thoroughly, I slapped in some toner and lotion.”
ケツ ketsu = butt / anus (n.)
に ni = on / to (particle indicating location/target)
スクラブ sukurabu = scrub (loanword from English)
を o = (object marker particle)
し shi = do / perform (v. stem of 'suru')
、 = (comma punctuation)
念入りに nenbirini = thoroughly / meticulously (adv.)
念入 nen'nyū¹ = careful / thorough
り ri = -ly suffix for adverbs
洗った aratta = washed (v. past tense of 'arau')
洗 ara = wash
った tta = past tense suffix
あと ato = after / afterwards (n.)
化粧水 keishō¹sui = toner / face wash (n.)
化粧 keishō¹ = makeup / cosmetics
水 mizu = water
と to = and / with (conjunction/particle)
乳液 nyūei¹ = lotion / emulsion (n.)
乳 nyū¹ = milk / breast
液 eki = liquid
を o = (object marker particle)
叩き込んだ tataki-konda = slapped in / forced in (v. compound of 'tatakau' + 'konda')
叩き tataki = hit / strike
込 komu = stuff / pack / force in
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待ってろよ、ケツ
→ “Just you wait, butt!”
待ってろ matte-ro = wait (imperative colloquial form of 'matteru')
待っ matte = wait
ろ ro = colloquial imperative ending
よ yo = emphatic particle (adds emphasis/warning)
、 = (comma punctuation)
ケツ ketsu = butt / anus (n.)
notadictionary.com
蛍になる日も近い
→ “The day I become a firefly is near.”
蛍 hotaru = firefly (n.)
に ni = to / into (particle indicating change of state)
なる naru = to become / turn into (v.)
日 hi = day (n.)
も mo = also / even (focus particle)
近い chikai = near / close (adj.)