懈怠: spiritual sloth; laziness

𱁬: The meaning of this term is uncertain.

大都市: a metropolis, a large city

お大事に: get well soon, take care of yourself

代理: surrogation, proxy

period drama

a historical period where social disorder is so great due to war, disease, political disorder etc. that there is little or no cultural development; Dark Ages

anachronism

youth (part of life following childhood)

zeitgeist (the spirit of the age)