貫徹輔助魔法支援弱小隊友的宮廷魔法師/慘遭驅逐後目標成為最強冒險者/The Banished Court Magician Aims to Become the Strongest/ A Court Magician/ Who Was Focused on Supportive Magic Because His Allies Were too Weak/ Aims to Become the Strongest After Being Banished/ Story of Lasting Perio/