the cause of a disease

sickness / ill, sick

(slang) abnormal, mentally ill

doctor

yet, still / Indicating it hasn't been a long time since something happened. / Indicating a choice is not good enough but still slightly better than others.

unfinished; not done

魔男: wizard / 魔弾: magic bullet

has not done yet

a certain one, particular one, specific one

specify, identify, determine