Reading over the new kokujin personality, he is inexperienced but not inexperienced hitomi kokujin. Also kokujin xp3 is just expeirenced 3 not hitomi kokujin expeirenced 3. So being as they are two different personalities in name, since kokujin xp3 does not say he is hitomi kokujin xp3, could you have xp3 and xp both in play, as they are both differently named personalities.
Kokujin xp3 vs hitomi kokujin
A topic from AEG's L5R CCG Rules forum, copied for Oracle of the Void from a copy of the forum saved in October 2015, so pages it didn't save are missing. Players' names are left out; the rules officials are named. Rulings are as they stood on these dates; later rulings, the rulebooks and the Rules Archive may differ.
So being as they are two different personalities in name, since kokujin xp3 does not say he is hitomi kokujin xp3, could you have xp3 and xp both in play, as they are both differently named personalities.
Nope.
Legacy Rules:
"Cards with Experienced X (Alternate Title) are considered to also have all alternate titles that the Alternate Title card has, for the purposes of deck construction, the Unique rule, and overlaying. Additionally, all higher Experience keyword levels of a card with an Experienced (Alternate Title) keyword are considered to have that alternate title.
Example 1: Heigi's "Experienced 5 Akodo Ginawa" keyword is also considered to have the "Ginawa" alternate title, because Akodo Ginawa's Experienced 4 keyword does. Example 2: Shosuro's "Experienced 7" keyword is considered to have the Ninja Shapeshifter alternate title because her Experienced 1 version does.
Also, some cards have the "Experienced KYD" keyword (possibly with a number between Experienced and KYD). Treat this card as a separate Experience level of the personality. The main implication of KYD is that cards with the same title and Experience level can be included in the same deck if one has “KYD” and the other does not.
When overlaying an Experienced KYD personality, ignore the "KYD" entirely, and treat the personality as if it had the "Experienced" keyword, along with any appropriate number.