Tadayuki Isa

Tadayuki Isa (伊佐タダユキ) is a Geography teacher at Shin Kawahama First High School. He was turned into an Apostle against his will by Spinner Superior, forcing him to lust after the Azure as well as his students.

Tadayuki is a minor antagonist in BlazBlue: Bloodedge Experience - Part 1.

Personality
Tadayuki is only shown when he has undergone his transformation into an Apostle. He was shown as being extremely aggressive and having twisted sexual desires. He would blackmail his female students into sexual acts, most of which was BDSM related. He showed no remorse for his actions, only desiring more and more. Occasionally, he would make noises similar to an insect.

It is important to note that Tadayuki's behaviour only started after his transformation. Otherwise, he seems to have been respected by the majority of his students prior to becoming an Apostle. Some of them expressed sadness and worry at his temporary retirement.

Biography
A Geography teacher at Shin Kawahama First High School. Tadayuki has one class where he teaches Naoto Kurogane, Haruka Hayami, and Shinnosuke Fukuda. At some point, he was transformed into an Apostle by Spinner Superior, and found Kana Kirishima exiting an adult store in a back alley. He took photos of the girl exiting and used it to blackmail her into sexual acts, of which he filmed, stopping Kana from escaping his grasp.

Bloodedge Experience - Part 1
In October, Tadayuki taught one of his lessons to Naoto, Haruka, and Shinnosuke, but quickly lost his temper at the first boy, shouting at him for his behavior and for not paying any attention. He went home early that night. The teacher spent some time off school, leaving his students to self-study.

Several nights later, Tadayuki called for Kana and she arrived at his apartment. As they begun to delve into their usual acts, the teacher started asking about Haruka, but was met with dismay by Kana, who asked him not to think about her. The teacher's apartment had fallen apart at the seams to the point where it was easy for Raquel Alucard to deduce his condition.

The teacher entered the Student Council room after school had ended and found Haruka. He set up a camera on the nearby table as the girl attempted to escape. Tadayuki lunged at her, getting the girl on the floor and begun to strip her against her will. Naoto burst through the door and punched his teacher as hard as he possibly could. The two began to fight as Raquel arrived and put Haruka aside on a nearby bench. Tadayuki lost his patience and began to transform further, large beetle legs erupting from his back. Tired of seeing his student run circles around him, Tadayuki set his sights on Haruka and Raquel, lunging towards them with his new legs. Naoto took the brunt of the attack and activated his Drive - Bloodedge.

Using Bloodedge, Naoto cut off Tadayuki's beetle legs and defeated the teacher, knocking him unconscious. He was later taken in by the Mitsurugi Agency and they performed a life-saving operation on him, removing the insect that had infected his body. The Agency kept the films he had made of himself and Kana, and also erased his memories of his life as an Apostle. Tadayuki took a temporary retirement from his life as a teacher.

Powers and Abilities
As an Apostle, Tadayuki possessed several abilities related to his condition. When angered, he could produce massive beetle legs from his back, and could use them to fight with each kick possessing a large amount of force behind it. The tips of the legs are sharp enough that they can pierce through a person's body. As he has been cured of his condition, Tadayuki no longer has the abilities possessed by Apostles.