Jungkook's hand shows a pronounced Moon mount and well, the Venus mount is developed too. His heartline is low-set and dips down to touch the headline and the Mercury (pinkie/little) finger is held apart in many of the photos. Jungkook has a good Apollo (ring) finger, and it is probably the strongest finger on his hand. The first phalanges of the hand are long, significantly long, and the second phalanges are a good length too. The third phalanges are the shortest and slimmest.
The three main lines of any hand: the headline, the heartline and the lifeline are prominent. Unfortunately, I could not see either the Saturn (Fate) line or the Apollo (Sunline) on the hand