Aiku is a very tall, muscular man with shaggy purple hair with green ends and light facial hair. Aiku is heterochromatic and his eyes are different colours, with his left eye being green and his right eye being purple. He is a womanizer and doesn’t believe in committing to one person for his whole life. He doesn’t see a problem with seeing other women as long as he doesn’t love them and only loves the person he’s dating. He is flirty and somewhat cocky. However he possesses as sweet side.