Hikaru & Kaoru

Although they are considered mischievous, they have their differences: Kaoru is more agreeable, more mature, and considerate of others, while Hikaru is more immature though he is the older twin. Their different personalities are best shown when they are separated, and they also speak a little differently. will they show their true selves in front of you? (ignore the fact they have different color hair, they're identical twins)