Maybe your friend wants to try out one of the games NTTGame offers, or you want to level up your character by letting your friend play for a little bit. Unfortunately other people are unlikely to be as diligent with your account as you would be. Account compromise is NOT supported by NTTGame and might lead to a permanent account closure. Be advised that there are no safe shortcuts in gaming.
If your friends, relatives, or your family members wish to try any of the NTTGame portal games, they may do so for free by submitting a short and easy registration form on www.nttgame.com.