Ep 10. Witch of the Deep Ocean V.S. Raikiri

In Chivalry of a Failed Knight season 1 episode 10, titled "Witch of the Deep Ocean V.S. Raikiri," Ikki and his team are preparing to face off against Nene Saikyo, also known as the Witch of the Deep Ocean, in the Seven Star Sword Art Festival. However, before the battle, Ikki encounters Nene's sister, Kagami Kusakabe, who informs him that Nene is a victim of a curse that has been placed on her.

As the battle begins, Nene reveals that her curse causes her to feel overwhelming pain whenever she uses her powers, making it impossible for her to fight at full strength. Despite this, Ikki refuses to hold back and engages in a fierce battle with Nene. Meanwhile, Kagami uses her own powers to support her sister and help her overcome the curse.

The battle takes a dangerous turn when Nene transforms into a giant sea monster, forcing Ikki to use his most powerful technique, Raikiri, to try and defeat her. However, Nene's own abilities prove to be too much for Ikki to handle, and he finds himself at the mercy of the Witch of the Deep Ocean.

In the end, it is a combination of Kagami's support and Ikki's determination that leads to Nene being freed from the curse and the battle coming to a close. With the tournament still ongoing, Ikki and his team are left to reflect on the intense fight and what it means for their future battles.