The 8th son? Are you kidding me? Season 1 Episode 7

At the wedding of his brother, Helmut, Wendelin learns he is expected to participate in a martial arts tournament, but as a noble he must use a sword instead of magic. Louise and Lina decide to participate as well. Erwin is convinced to participate by Brantack. Wendelin obtains permission from Hohenheim to add Elize to their party. Erwin decides he wants to become champion, until realising the previous champion, Warren, Commander of the Royal Knights, is participating again, and snaps at Louise and Lina due to his bitterness of having no magic. The next day he learns Elize has also been training, believing her lack of physical ability makes her a hindrance. Realising everyone has some weaknesses, Erwin apologises. During the preliminary matches Wendelin faces Warren and loses instantly. Louise is defeated in the semi-finals. Lina goes up against Roderich, an annoyingly stubborn spear user obsessed with being hired by Wendelin, and loses against him.