one's true value/worth; what one is really made of

fighting using real metal swords / fighting in earnest

someone imprisoned or prosecuted for what he himself do not consider evil or unjust (e.g. a prisoner of conscience, a prisoner of war, a performer of religious violence)

credit union

a 私撰和歌集 (shisen wakashū, “privately-compiled anthology of poems”) in two volumes, thought to be compiled by Sugawara no Michizane around 893–913 CE, with the poems completely written in 万葉仮名 (man'yōgana)

neurology

meltdown

to become to meltdown

Kyūjitai form of 異体同心: harmony of mind between two persons; two persons acting in perfect accord

(idiomatic) to be extremely or excessively vigilant