Riko Niki

Riko Niki (ニ木 理子, Niki Riko) is a cognitive psychology student at Tokyo University and part of Professor Maruyama's research group.
==Physical description==
Niki has long fair hair and dark eyes. She has a fringe and wears her hair in a messy bun on her back; two loose strands frame her face.
==Personality==
==Biography==
===History===
At some point, Niki cancelled a MRI and was scolded by Kanae Himeno for it. This angered Niki so much that she screamed "Die, you ugly jerk!" at her.
===Psychological Research Lab Murder Case===
When Kanae Himeno is showing Chicory Monki, Ron Kamonohashi, and Totomaru Isshiki, who have come to Maruyama's research lab to gather data, around, Renjiro Imai and Shun Oigawa get into an argument about the reservation for the experiment room. Niki asks Himeno why she does not go and "flirt" with Takanori Aoe so that he can arbitrate. After all, Himeno is always with Aoe and says "Oh, Professor! Professor!" so often that it could be her catchphrase.
The next morning, Himeno is killed in an explosion in the lab when she opens the door to the shield room as it has been filled with flammable gas. Toto and Ron investigate her murder and gather Niki, Imai, and Oigawa in a lecture room to interview them as Aoe told them that the use of the experiment room is left to them. Toto asks if any of them knew that Himeno would be using the experiment room this morning. Niki does not reply, but Oigawa and Imai inform Toto that they all knew as they used the lottery feature of a messaging app to determine who would get the experiment room this morning.
Then, Totomaru wants to know what they were doing until this morning, and Niki replies that she went to sleep as it was late. She woke up at nine a.m. as always and headed to Tokyo University afterward. After Oigawa reveals that Imai stalked Himeno, Niki calls him a "creeper," and Imai angrily replies that she hated Himeno the most and screamed at her to die when Himeno scolded her for cancelling the MRI experiment. They yell at and accuse one another, and Toto tells them to calm down
Niki is later present when Toto and Ron gather her, Imai, Oigawa, and Aoe to reveal the culprit and tell them what actually happened. She is shocked to learn that Aoe killed Himeno and nearly dies when Aoe attempts to blow them up with a bomb. Fortunately, Ron can tackle him down beforehand.
==Etymology==
* The name "Riko" means "reason, logic" (理, ri) and "child" (子, ko).
* Her surname "Niki" means "second tree" (ニ木).
==References==
Category:Characters
Category:Female characters
Category:Psychological Research Lab Murder Case characters
Category:Civilians
Category:Tokyo University
Category:Tokyo residents