Koichi's hula dancing abilities are genuine.
There is no one who has witnessed Viet's true power yet.
They usually say, "luck is what you make of it."
The truth behind someone's strength is their true strength. It is also their true ability.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.