I Was Reincarnated as the 7th Prince so I Can Take My Time Perfecting My Magical Ability 3

Between hunting monsters and forging spellbound weapons, Prince Lloyd is once again busy at work! Prince Lloyd finds an elusive intruder in the palace grounds... Her name is Ren, an assailant with a poisonous skill and a member of the mysterious Assassins Guild. Who are the Assassins Guild? And what do they want with Lloyd? Includes a short story by the writer, Kenkyo-na-Circle!