TV-Series
Description
Issa Kizuku is a member of the idol unit VAZZY under Tsukino Talent Production. His natural genius aptitude allowed effortless excellence in diverse pursuits since childhood, fostering a self-centered, free-spirited, and outwardly arrogant demeanor with a "my way or the highway" attitude. Despite this, he displays underlying innocence without hidden motives. His behavior shifts dramatically with comfort levels: privately or relaxed, he becomes blunt, rude in speech and attitude, and inattentive. He maintains strict boundaries between personal and professional spheres, adapting conduct appropriately when required.

Physically, he stands 178 cm tall with collar-length black hair, long bangs covering his left eye, and distinctive red eyes. A small mole rests under his right eye, and he has four piercings in his right ear. He shares no strong physical resemblance with his younger brother and unit mate, Futaba Kizuku. His birthday falls on July 23, and his blood type is A.

His background includes involvement in a high school band planning a professional debut. He quit the band to pursue personal goals, though former bandmates continued in music. Before joining Tsukino Talent Production, he held industry experience acknowledged by peers like Ouka Kira and Takaaki Mamiya.

Relationships reveal core aspects of his character. With Futaba, he exhibits a complex dynamic: demanding service as a "manservant," teasing him, or physically interacting (like smacking him awake for fresh bread). This treatment, rooted in unique affection from Futaba's sickly childhood, masks genuine pride in his brother’s talents and silent support. Futaba respects him deeply and values their collaboration. Both publicly deny closeness but privately share mutual respect and rivalry.

Within VAZZY, he respects leader Takaaki Mamiya yet often disobeys; Takaaki reciprocates with teasing, leading to rivalrous challenges like a drinking contest Issa lost. He clashes with Ouka Kira over opposing personalities, particularly regarding Futaba, though their blunt honesty allows calling out blind spots. Naosuke Oyama persistently challenges him for superiority, provoking Issa to label him "annoying," "a brat," or "stupid dog" while enforcing "-san" honorifics. Still, Issa shows concern, as when Naosuke fell ill after waiting for him in rain. He views Yuma Shirase as a "Prince" or "honor student," finding him overly virtuous. He holds fondness for the unit’s cat, Vazz, and plays with it.

He dislikes teasing or blackmail, reacting negatively to compromising situations like threats to show sleeping photos. Generally quiet and speaking only when addressed, he responds with annoyance if provoked, especially by Naosuke or Futaba. He describes himself as someone pursuing one hobby at a time. Gradually, he has grown more open in expressing emotions and gratitude toward VAZZY colleagues. Takaaki characterizes his nature as cat-like, an observation Futaba corroborates.