After purchasing 1st class change quest, you don`t receive coupons for shadow weapons D grade. If thats intended maybe you should include a message for people who are new and unaware, that upon using the .menu they won`t get shadow weapon coupons.
Furthermore perhaps you should rise the limit of lvl 25 to recieve traveler`s coupon for D grade weapon from the "Queen Cat". That is really unfortunate for someone who went out in the world and just leveled with his NG weapon, hit lvl 20 changed class and continued to level to 25 before going back to town and seeing he can`t get any weapon (neither shadow D with coupons nor traveler`s weapon)