Amnesia

Amnesia
Type	Delayed
Users	Rika Saionji (formerly) Nancy (formerly) Rui Takuma Ryu Yamada (through Duplication; formerly) Ushio Igarashi (through Grasp)

Amnesia is a Witch Power.

Description

The user erases the memory of the one they used their power on. The total memories that are erased appears to be back to when the victim crossed path/knew about the first witch. On a Witch Killer however, it erases the memories of those who met the target aside from the Seventh Witch, other Witch Killers and Spotters. It also possible for people to regain their total memories if the ability was forcibly removed from the current user, such as during the ceremony as shown where Ryu wished that all the powers of Rika's set would disappear through the ceremony.

This power also seems to overlay on other powers. It also overlays on other erased memories from other seventh witches of another set. Nancy's variation also allows her to rearrange the memory as she wishes by switching the people in it, though this was shown when she had less control on the accuracy. Rika's variant seems to also allow her to replace people in the memories as well, though this was after an attempt to erase Shinichi and Ryu's memories. The Amnesia power doesn't work on students who aren't in the campus. The user can also do a mass erasure of memories on the entire student body, such as when Ushio erased the memory of Nene's speech during the election day.

Risks/Drawbacks

Each time the user uses his/her power, he or she will be forgotten by everyone. If the user isn't adapted at using the power, then there is a risk of the memory that was manipulated to be changed into something undesired. In addition, the power cannot be used to erase the memories of people that are outside the campus at time that it is being used, as shown through Leona who was able to evade the amnesia power twice.

Ushio and Ryu linked.

In the case of two Witch Killers having the same Seventh Witch's power then they both will be erased from the memories of others due to their link.

Casted Spells

Name	Casted By	Status
Haruma Yamazaki	Rika Saionji	Removed
Urara Shiraishi	Rika Saionji*	Returned
Toranosuke Miyamura	Rika Saionji*	Removed
Miyabi Ito	Rika Saionji*	Removed
Kentaro Tsubaki	Rika Saionji*	Removed
Nene Odagiri	Rika Saionji*	Returned
Ushio Igarashi	Rika Saionji*	Removed
Karen Kimishima	Rika Saionji*	Removed
Rin Sasaki	Rika Saionji*	Removed
Meiko Otsuka	Rika Saionji*	Returned
Hideaki Tsurukawa	Rika Saionji*	Removed
Mitsuru Kameda	Rika Saionji*	Removed
Maria Sarushima	Rika Saionji*	Returned
Noa Takigawa	Rika Saionji*	Returned
Saeko Fukazawa	Rika Saionji*	Removed
Keigo Shibutani	Rika Saionji*	Removed
Ren Asano	Rika Saionji*	Removed
Leona Miyamura	Rika Saionji	Removed
Rui Takuma	Nancy	Returned
Ryu Yamada	Nancy	Returned
Nene Odagiri	Nancy	Returned
Ushio Igarashi	Nancy	Returned
Sora Himekawa	Nancy	Returned
The Student Body	Ushio Igarashi	Active
Nene Odagiri	Ushio Igarashi	Active
Toranosuke Miyamura	Ushio Igarashi	Returned
Urara Shiraishi	Ushio Igarashi	Returned
Miyabi Ito	Ushio Igarashi	Returned
Kentaro Tsubaki	Ushio Igarashi	Returned
Yuri Miura	Ushio Igarashi	Active
Kaori Yasojima	Ushio Igarashi	Active
Mutta Hagiwara	Ushio Igarashi	Active
Masamune Ichijo	Ushio Igarashi	Active
Rui Takuma	Ushio Igarashi	Active
Nancy	Ushio Igarashi	Active
Sid	Ushio Igarashi	Active
Jin Kurosaki	Ushio Igarashi	Active
Midori Arisugawa	Ushio Igarashi	Active
Tsubasa Konno	Ushio Igarashi	Active
Kotori Moegi	Ushio Igarashi	Active
Momoko Seishuin	Ushio Igarashi	Active

^* - was casted via erasing a Witch Killer.