背向: disobeying and obeying / 背甲: the shell of a turtle or tortoise / 廃坑, 廃鉱: an abandoned mine / 配光: the distribution of light around a room

廃坑, 廃鉱: to abandon a mine / 廃校: to close a school / 廃興: to fall and rise

灰原: a surname

配信: transmission, distribution

排外: anti-foreign, xenophobic / 灰貝: a blood cockle

配偶子: gamete

Synonym of 黄昏 (tasogare, “dusk; twilight”) / Synonym of 黄昏時 (tasogaredoki, “dusk; twilight”)

厚顔: impudence, audacity / 紅顔: rosy cheeks / 睾丸: testicles

元旦: New Year's Day

離岸流: riptide, rip current, offshore current