|Height||188 cm (6'2")|
|Affiliation||Lion King Organization|
Manmade Island Management Corporation
|Relatives||Kazuma Yaze (Half-Brother)|
Koyomi Shizuka (Girlfriend)
|Weapon||Air Current / Sound Wave Manipulation|
|Anime Debut||Episode 1: Right Arm of the Saint I|
|Manga Debut||Chapter 1: The Fourth Primogenitor|
|Novel Debut||Volume I: Right Arm of the Saint|
|Japanese Voice||Ryota Osaka|
Motoki Yaze (矢瀬 基樹, Yaze Motoki) is the childhood friend of Asagi and the best friend of Kojou and is in the same class as Asagi and Kojou at Saikai Academy. He knows that Kojou is the Fourth Primogenitor as he is a member of the Lion King Organization and is the real observer of Kojou.
Motoki is a tall, high-school student. He has teal eyes and swept back brown hair. He also has a pair of headphones around his neck most of the time. He wears the Saikai Academy school uniform.
Motoki is the son of the Manmade Island Management Corporation's owner.
Right Arm of the SaintEdit
Emissary of the WarlordEdit
Labyrinth of the Blue WitchEdit
Banquet of the ObserversEdit
Return of the AlchemistEdit
He is an Esper who has the ability to manipulate special soundwaves, granting him superhuman hearing, however he needs certain drugs or enhancers to use his abilities to the fullest.
|Sound Control||Motoki has the ability to control sound and uses it for eavesdropping and for scouting. He also possesses a strange pill that increases his ability and allows him to perform even greater supernatural abilities, such as propelling himself into the air. Using more than one pill allows him to create a sound clone of himself and control it by concentrating while wearing his headphones. What this clone is capable of doing is currently unclear as it was destroyed quickly by Dimitrie Vatler.|
|Soundscape||By using his headphones he is able to enhance his hearing beyond that of a normal human. He is able to use this ability to spy on others or to keep tabs on them. The weakness of Soundscape is that it is too sensitive, a powerful burst from Kojou Akatsuki when he was injured by Kirasaka Sayaka disrupted the Soundscape and harmed Motoki's hearing for several minutes.|