Ep 7. Talk of the devil, and he is sure to appear.

As the seventh episode of season one of The Ancient Magus' Bride (Original Japanese Version), "Talk of the devil, and he is sure to appear." begins with Chise feeling a bit homesick and missing her life in the mortal world. This prompts Elias to take her to a nearby summer festival, where they come across some unexpected visitors.

During the festival, Chise and Elias meet Mariel and her husband, Simon, who are both powerful mages. Mariel is intrigued by Chise and invites her to join them for a drink, where they discuss magic and the different types of spells they can cast. Mariel even reveals that she has the power to raise the dead, something that both fascinates and terrifies Chise.

However, their pleasant evening takes a dark turn when Mariel begins to act strangely, saying that she can sense something dangerous and that they need to leave immediately. Before they can depart, Mariel is attacked by a group of mysterious figures, and Chise and Elias are forced to step in and protect her.

As the trio tries to fend off the attackers, they realize that the group is after Mariel's powerful magic. With Elias' help, Chise is able to summon a powerful creature to defeat the attackers, but not before Mariel is seriously injured in the battle.

In the aftermath, Mariel reveals that the attackers were members of a group known as the Cartaphilus, who are searching for a way to achieve immortality. Mariel herself was once a member of the group but left when she realized the true nature of their motives. She warns Chise and Elias to be careful and not get involved with the Cartaphilus, as they are dangerous and will stop at nothing to achieve their goals.

As they leave the festival, Chise is left to contemplate the dangers of magic and the powers that some mages possess. She also reflects on the importance of having a strong support system and how grateful she is to have Elias by her side.

Overall, "Talk of the devil, and he is sure to appear." is a thrilling episode that delves deeper into the world of magic and introduces new characters and dangers for Chise and Elias to navigate. With stunning animation and a captivating storyline, this episode is sure to leave viewers on the edge of their seats.