Saiki Kusuke Personality: A Genius Inventor with an Inferiority Complex

Saiki Kusuke is the older brother of the main protagonist, Saiki Kusuo. He is a super genius who invents various devices and machines, but he lacks psychic abilities and thus always loses in any sort of competition with his brother.

Kusuke is arrogant, competitive, cunning, and ambitious. He is obsessed with surpassing his brother in any way possible, even if it means resorting to cheating or sabotage. He is also very proud of his intelligence and inventions, and often boasts about them to others. He is not above using his inventions to manipulate or harm people, especially his brother, for his own amusement or benefit.

Kusuke’s personality stems from his childhood, when he was constantly overshadowed by his brother’s psychic powers. He felt inferior and resentful towards Kusuo, who could do anything effortlessly and without any recognition. He also felt neglected by his parents, who were more focused on Kusuo’s well-being and safety. He decided to devote himself to science and technology, hoping to find a way to surpass his brother or even take away his powers.

Kusuke’s personality has led him to many conflicts and challenges in his life. He moved to England to pursue his studies and research, but he also faced rivalry and hostility from other geniuses and organizations. He often clashed with his brother over various matters, such as their birthday gifts, their school festival projects, or their future plans. He also tried to interfere with his brother’s relationships, such as by creating a love potion or a mind control device. He even attempted to destroy the world once, just to prove his superiority over his brother.

Kusuke’s personality, however, also has some positive aspects. He is very loyal and protective of his family, and he would never harm them seriously. He also respects and admires his brother’s abilities, and he secretly wishes to have a better relationship with him. He sometimes shows a softer and kinder side, such as by helping his brother with his problems, or by giving him thoughtful gifts. He also has a sense of humor and a playful streak, and he enjoys having fun with his inventions and experiments.